A seamless jacket with waterproof function

Abstract

The utility model belongs to the technical field of the jacket, especially a seamless jacket with waterproof function, including the body, the shoulder both sides of body are connected with the sleeve, the front of body is provided with the door front, one side of door front is connected with the door front waterproof piece, the waterproof zipper is installed along the rim of door front on the front of body, the front of body is located both sides of door front and is equipped with the slanting drainage guide groove, the lower part of the junction of body, sleeve is equipped with the armpit moisture -permeable module, the armpit moisture -permeable module includes the position of the bottom of sleeve close to the body along the front -back trend setting's moisture -removing channel, the double -sided zipper of installation in the inside of moisture -removing channel, the rain -proof cover piece of setting in the moisture -removing channel lower part and the body, sleeve junction, and the waterproof moisture -removing layer located in the inside of moisture -removing channel, the device can quickly discharge the rainwater in front of chest, realize armpit efficient ventilation and heat dissipation and waterproof dual function, avoid the rainwater direct to the face and cause the discomfort, improve the visibility and the comfort under the bad weather.

Description

Technical Field

[0001] This utility model belongs to the field of outdoor clothing technology, specifically relating to a seamless outdoor clothing with waterproof function. Background Technology

[0002] A waterproof jacket is a functional outdoor garment that combines windproof, rainproof, and cold-weather protection, widely used in outdoor activities such as mountaineering, exploration, and skiing. To enhance protection and comfort, modern waterproof jackets typically employ water-repellent coatings and breathable composite materials, utilizing three-dimensional tailoring and structural splicing to protect key body areas. In the high-end market, some waterproof jackets use seamless heat-pressing technology to replace traditional stitching, reducing the risk of pinhole leakage and thus improving the overall waterproof rating. A seamless waterproof jacket typically includes the body, sleeves, placket, and hood, with design focuses on waterproofing, breathability, and adjustability.

[0003] However, existing seamless outdoor jackets still generally suffer from the following two structural technical problems in practical use:

[0004] Firstly, most seamless rain jackets rely solely on the water-repellent properties of the fabric and the waterproof membrane of the zipper for rain protection, lacking structural water-wicking design. This causes rainwater to easily accumulate in the chest area and seep downwards, resulting in poor water drainage in the chest area and creating a risk of water stagnation and infiltration. When encountering heavy rainfall or changes in wind pressure, water may still seep into the inner layer along the zipper gaps or the edges of the placket, affecting the wearing experience and the dry environment inside the garment.

[0005] Secondly, when the wearer is engaged in strenuous exercise or in a hot and humid environment, the armpit area is prone to accumulating heat and moisture. The lack of a structural design that combines ventilation and rain protection in the armpit area makes it difficult to balance breathability and waterproofness, reducing its practicality and comfort in inclement weather. Utility Model Content

[0006] To address the above problems, the purpose of this utility model is to provide a seamless waterproof jacket that can quickly wick away rainwater from the chest, achieving the dual functions of efficient ventilation and heat dissipation under the armpits while being waterproof, preventing rainwater from directly hitting the face and causing discomfort, and improving visibility and comfort in inclement weather.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a seamless waterproof jacket, comprising a body, sleeves connected to both sides of the shoulders of the body, a placket on the front of the body, a waterproof flap connected to one side of the placket, a waterproof zipper installed along the edge of the placket on the front of the body, and oblique drainage channels on both sides of the placket on the front of the body. An underarm moisture-wicking module is provided below the connection between the body and sleeves. The underarm moisture-wicking module includes a moisture-wicking channel located at the bottom of the sleeve near the body, running in a front-to-back direction, a two-way zipper installed inside the moisture-wicking channel, a rainproof cover connected to the connection between the body and sleeve below the moisture-wicking channel, and a waterproof moisture-wicking layer located inside the moisture-wicking channel. A hood is connected to the top back of the collar of the body, and a transparent waterproof protective panel is provided below the brim of the hood.

[0008] The beneficial effects of this utility model are as follows: the oblique drainage channels set on both sides of the placket can quickly guide the rainwater attached to the chest along the "V" groove to the bottom of the garment and discharge it. In addition, the surface of the oblique drainage channels is covered with a hydrophilic drainage membrane coating, which further promotes the directional discharge of water, thereby significantly reducing the risk of water seepage caused by rainwater retention.

[0009] When the wearer engages in strenuous activity or is in a humid and stuffy environment, the underarm moisture-wicking module can dissipate heat and wick away moisture. It includes a moisture-wicking channel located at the bottom of the sleeve and running from front to back. It has a two-way zipper inside. When heat dissipation and moisture wicking are not needed, the moisture-wicking channel can be closed by the two-way zipper and covered by a rain cover to effectively prevent rainwater from entering. When heat dissipation and moisture wicking are needed, the user can open and adjust the size of the ventilation opening as needed. The rain cover forms a rain barrier, preventing rainwater from flowing back into the clothing even when the channel is open. The rain cover is made of elastic polyurethane waterproof fabric, which has flexibility and good rebound and fit performance. At the same time, there is a waterproof moisture-wicking layer inside the moisture-wicking channel. The side closest to the channel is covered with a waterproof film, and the inside is a breathable elastic mesh fabric. It can block external rainwater from penetrating while ensuring moisture wicking and breathability, achieving the dual functions of efficient ventilation and heat dissipation under the armpit and waterproofing.

[0010] In windy and rainy environments, the wearer can cover their head with the hood. When it is not raining or the rain is light, the transparent waterproof panel can be removed. In heavy rain, the transparent waterproof panel can be magnetically attached to the first magnetic block inside the hood brim using the second magnetic block inside the panel, thus fixing the transparent waterproof panel to the front under the brim. Both sides of the transparent waterproof panel are coated with a hydrophobic coating to prevent rainwater and breathed moisture from forming a water film or fog on the front and back surfaces of the panel, ensuring clear vision for the wearer. The transparent waterproof panel is made of PC material, with a thin and lightweight overall structure, good transparency, strong impact resistance, and good high and low temperature resistance. It is not easily deformed under wind force, while preventing rainwater from directly hitting the face and causing discomfort, thus improving visibility and comfort in inclement weather.

[0011] As a further improvement to the above technical solution: the garment body, sleeves, and hood are all formed by hot-pressing and bonding a surface water-repellent layer, a moisture-permeable middle layer membrane, and an inner skin-friendly fabric to form a three-layer integrated structure.

[0012] The garment body, sleeves, and hood are integrally formed by heat-pressing a water-repellent outer layer, a breathable middle layer membrane, and an inner skin-friendly fabric, creating a waterproof shell structure that provides excellent water repellency, impermeability, and a comfortable, skin-friendly feel.

[0013] To quickly drain the rainwater clinging to your chest:

[0014] As a further improvement to the above technical solution: the oblique drainage channel extends from the placket to the bottom of the garment, and its cross-section is a "V" shaped groove with a width of 3-5mm and a depth of 0.5-1mm, and its surface is covered with a hydrophilic drainage membrane coating.

[0015] The beneficial effects of this improvement are as follows: the slanted drainage channels on both sides of the placket can quickly guide rainwater attached to the chest along the "V-shaped" groove to the bottom of the garment and drain it out. In addition, the surface of the slanted drainage channels is covered with a hydrophilic drainage membrane coating, which further promotes the directional drainage of water, thereby significantly reducing the risk of water seepage caused by rainwater retention.

[0016] As a further improvement to the above technical solution: Velcro is provided on the back of the waterproof flap and on the other side of the flap.

[0017] Velcro is used to securely fasten the waterproof flap to the front of the garment, ensuring a stable cover over the flap.

[0018] As a further improvement to the above technical solution: the waterproof flap and the rainproof cover are both made of elastic polyurethane waterproof fabric.

[0019] The rainproof cover is made of elastic polyurethane waterproof fabric, which has flexibility and good rebound and adhesion performance.

[0020] To achieve the dual functions of efficient ventilation and heat dissipation under the armpits while also being waterproof:

[0021] As a further improvement to the above technical solution: the waterproof and moisture-wicking layer includes a breathable elastic mesh fabric disposed on the inside of the garment body, and the side of the breathable elastic mesh fabric near the moisture-wicking channel is covered with a waterproof film.

[0022] The beneficial effects of this improvement are as follows: the moisture-wicking channel is equipped with a waterproof moisture-wicking layer, with a waterproof film covering the side closest to the channel and a breathable elastic mesh fabric on the inside. This can prevent external rainwater from seeping in while ensuring moisture wicking and breathability, achieving the dual functions of efficient ventilation and heat dissipation under the armpits and waterproofing.

[0023] To prevent rainwater and breath moisture from forming a water film and fog on the front and back surfaces of the panel:

[0024] As a further improvement to the above technical solution: both the front and back sides of the transparent waterproof protective panel are coated with a hydrophobic coating.

[0025] The beneficial effects of this improvement are as follows: The hydrophobic coating uses polydimethylsiloxane (PDMS) material, which forms a smooth hydrophobic surface and reduces water vapor adhesion. This prevents rainwater and breathed-out humid gases from forming an adhering water film and fog on the front and back surfaces of the panel, ensuring clear vision for the wearer. It also has a certain degree of resistance to high and low temperatures, making it suitable for use in low-temperature environments such as mountaineering.

[0026] To facilitate quick installation and removal of the transparent waterproof protective panel:

[0027] As a further improvement to the above technical solution: a first magnetic block is provided in the inner lining of the brim of the hoodie, and a second magnetic block is provided on the inner side of the transparent waterproof protective panel, and the second magnetic block is magnetically connected to the first magnetic block.

[0028] The beneficial effects of this improvement are: through the cooperation of the first magnetic block and the second magnetic block, the transparent waterproof protective panel can be quickly installed and removed, making it convenient to remove the transparent waterproof protective panel when it is not raining, and to install the transparent waterproof protective panel when it is raining.

[0029] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0030] Figure 1 This is a front structural diagram of the present invention;

[0031] Figure 2 This is a schematic diagram of the back of the present invention;

[0032] Figure 3 This is a schematic diagram showing the positions of the sleeve and underarm see-through modules in this utility model;

[0033] Figure 4 This is a cross-sectional schematic diagram of the sleeve in this utility model;

[0034] Figure 5 This is a side sectional view of the hood and transparent waterproof protective panel of the present invention;

[0035] Figure 6 This is a schematic diagram of the cross-sectional shape of the inclined drainage guide channel of this utility model;

[0036] In the picture: 1. Body; 2. Sleeve; 3. Placket; 4. Waterproof placket panel; 5. Waterproof zipper; 6. Velcro; 7. Angled drainage channel; 8. Underarm breathable module; 9. Two-way zipper; 10. Moisture wicking channel; 11. Waterproof membrane; 12. Breathable elastic mesh fabric; 13. Rainproof cover; 14. Hood; 15. First magnetic block; 16. Transparent waterproof protective panel; 17. Second magnetic block. Detailed Implementation

[0037] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0038] like Figure 1-6 As shown, a seamless waterproof jacket includes a body 1, sleeves 2 connected to both shoulders of the body 1, a placket 3 on the front of the body 1, a waterproof flap 4 connected to one side of the placket 3, a waterproof zipper 5 installed along the edge of the placket 3 on the front of the body 1, and oblique drainage channels 7 on both sides of the placket 3 on the front of the body 1. An underarm moisture-wicking module 8 is provided below the connection between the body 1 and the sleeves 2. The underarm moisture-wicking module 8 includes a moisture-wicking channel 10 located at the bottom of the sleeves 2 near the body 1 and arranged along the front-to-back direction, a two-way zipper 9 installed inside the moisture-wicking channel 10, a rainproof cover 13 located below the moisture-wicking channel 10 and connected to the connection between the body 1 and the sleeves 2, and a waterproof moisture-wicking layer located inside the moisture-wicking channel 10. A hood 14 is connected to the top back of the collar of the body 1, and a transparent waterproof protective panel 16 is provided below the brim of the hood 14.

[0039] The oblique drainage channels 7 set on both sides of the placket 3 can quickly guide the rainwater attached to the chest along the "V" shaped groove to the bottom of the garment 1 and drain it out. The surface of the oblique drainage channels 7 is covered with a hydrophilic drainage membrane coating, which further promotes the directional drainage of water, thereby significantly reducing the risk of water seepage caused by rainwater retention.

[0040] When the wearer engages in strenuous activity or is in a humid and hot environment, the underarm moisture-wicking module 8 can dissipate heat and wick away moisture. It includes a moisture-wicking channel 10 located at the bottom of the sleeve 2 and running through the front and back. It has a two-way zipper 9 inside. When heat dissipation and moisture wicking are not needed, the moisture-wicking channel 10 can be closed by the two-way zipper 9 and covered by a rain cover 13 to effectively prevent rainwater from entering. When heat dissipation and moisture wicking are needed, the user can open and adjust the size of the ventilation opening as needed. The rain cover 13 forms a rain barrier, which can prevent rainwater from flowing back into the clothing even when the channel is open. The rain cover 13 is made of elastic polyurethane waterproof fabric, which has flexibility and good rebound and fit performance. At the same time, the moisture-wicking channel 10 has a waterproof moisture-wicking layer inside. The side near the channel is covered with a waterproof film 11, and the inside is a breathable elastic mesh fabric 12. It can block external rainwater from penetrating while ensuring moisture wicking and breathability, and achieve the dual functions of efficient ventilation and heat dissipation under the arm and waterproofing.

[0041] In environments with heavy rain and wind, the wearer can cover their head with the hoodie 14. When it is not raining or the rain is light, the transparent waterproof protective panel 16 can be removed. When the rain is heavy, the transparent waterproof protective panel 16 can be magnetically attached to the first magnetic block 15 inside the brim of the hoodie 14 via the second magnetic block 17 inside, fixing the transparent waterproof protective panel 16 to the front under the brim. Both sides of the transparent waterproof protective panel 16 are coated with a hydrophobic coating to prevent rainwater and breathed moisture from forming a water film and fog on the front and back surfaces of the panel, ensuring clear vision for the wearer. The transparent waterproof protective panel 16 is made of PC material, with a thin and light overall structure, good transparency, strong impact resistance, and good high and low temperature resistance. It is not easily deformed under wind force, while avoiding rainwater directly hitting the face and causing discomfort, thus improving visibility and comfort in inclement weather.

[0042] The garment body 1, sleeves 2, and hood 14 are all formed by hot-pressing and bonding a surface water-repellent layer, a moisture-permeable middle layer membrane, and an inner skin-friendly fabric to create a three-layer integrated structure.

[0043] The garment body 1, sleeves 2, and hood 14 are integrally formed by hot-pressing a surface water-repellent layer, a breathable middle membrane, and an inner skin-friendly fabric, creating an overall waterproof shell structure with excellent water-repellent, impermeable, and comfortable skin-friendly properties.

[0044] The oblique drainage channel 7 extends from the placket 3 to the bottom of the garment body 1. Its cross-section is a "V" shaped groove, 3-5mm wide and 0.5-1mm deep, and its surface is covered with a hydrophilic drainage membrane coating.

[0045] The slanted drainage channels 7 set on both sides of the placket 3 can quickly guide the rainwater attached to the chest along the "V" shaped groove to the bottom of the garment 1 and drain it out. The surface of the slanted drainage channels 7 is covered with a hydrophilic drainage membrane coating, which further promotes the directional drainage of water, thereby significantly reducing the risk of water seepage caused by rainwater retention.

[0046] Velcro closures 6 are provided on the back of the waterproof flap 4 and on the other side of the flap 3.

[0047] Velcro 6 is used to securely fix the waterproof patch 4 to the front of the garment, so that it can stably cover the placket.

[0048] Both the waterproof flap 4 and the rainproof cover 13 are made of elastic polyurethane waterproof fabric.

[0049] The rainproof cover 13 is made of elastic polyurethane waterproof fabric, which has flexibility and good rebound and adhesion performance.

[0050] The waterproof and moisture-wicking layer includes a breathable elastic mesh fabric 12 disposed on the inside of the garment body 1, and a waterproof film 11 is provided on the side of the breathable elastic mesh fabric 12 near the moisture wicking channel 10.

[0051] The moisture-wicking channel 10 has a waterproof moisture-wicking layer inside, with a waterproof film 11 covering the side closest to the channel and a breathable elastic mesh fabric 12 on the inside. This can block external rainwater from seeping in while ensuring moisture wicking and breathability, achieving the dual functions of efficient ventilation and heat dissipation under the armpits and waterproofing.

[0052] The transparent waterproof protective panel 16 is coated with a hydrophobic coating on both sides.

[0053] The hydrophobic coating uses polydimethylsiloxane (PDMS) material, which forms a smooth hydrophobic surface and reduces water vapor adhesion. This prevents rainwater and breathed-out moisture from forming a water film and fog on the front and back surfaces of the panel, ensuring clear vision for the wearer. It also has a certain degree of resistance to high and low temperatures, making it suitable for use in low-temperature environments such as mountaineering.

[0054] The hoodie 14 has a first magnetic block 15 in the lining at the brim, and the transparent waterproof protective panel 16 has a second magnetic block 17 on the inner side, with the second magnetic block 17 magnetically connected to the first magnetic block 15.

[0055] With the cooperation of the first magnetic block 15 and the second magnetic block 17, the transparent waterproof protective panel 16 can be quickly installed and removed, making it convenient to remove the transparent waterproof protective panel 16 when it is not raining and to install the transparent waterproof protective panel 16 when it is raining.

[0056] The working principle and usage process of this utility model: During use, this utility model, through the heat-pressing of the outer water-repellent layer, the moisture-permeable middle membrane, and the inner skin-friendly fabric, forms an integral waterproof shell structure consisting of the garment body 1, sleeves 2, and hood 14, possessing excellent water-repellent, anti-permeability, and comfortable skin-fitting performance. When the wearer encounters rain, when rainwater comes into contact with the placket 3 on the front of the garment body 1, the waterproof zipper 5 set on the edge of the placket 3 provides basic sealing protection. At the same time, the waterproof placket sheet 4 covers the outside of the placket 3 to prevent rainwater from directly hitting the placket 3. The back of the sheet is provided with Velcro 6 on the corresponding side of the placket 3 for sealing, effectively preventing rainwater from seeping into the chest from the placket 3. The oblique drainage channels 7 set on both sides of the placket 3 can quickly guide the rainwater attached to the chest along the "V"-shaped groove to the bottom of the garment body 1 and drain it out. The surface of the oblique drainage channels 7 is covered with a hydrophilic guiding membrane coating, which further promotes the directional drainage of water, thereby significantly reducing water seepage caused by rainwater retention. Risk: When the wearer engages in strenuous activity or is in a humid and hot environment, the underarm moisture-wicking module 8 can dissipate heat and wick away moisture. It includes a moisture-wicking channel 10 located at the bottom of the sleeve 2 and running through the front and back. It has a two-way zipper 9 inside. When heat dissipation and moisture wicking are not needed, the moisture-wicking channel 10 can be closed by the two-way zipper 9 and covered by a rain cover 13 to effectively prevent rainwater from entering. When heat dissipation and moisture wicking are needed, the user can open and adjust the size of the ventilation opening as needed. The rain cover 13 forms a rain barrier, which can prevent rainwater from flowing back into the clothing even when the channel is open. The rain cover 13 is made of elastic polyurethane waterproof fabric, which has flexibility and good rebound and fit performance. At the same time, the moisture-wicking channel 10 has a waterproof moisture-wicking layer inside. The side near the channel is covered with a waterproof film 11, and the inside is a breathable elastic mesh fabric 12. It can block external rainwater from penetrating while ensuring moisture wicking and breathability, and achieve the dual functions of efficient ventilation and heat dissipation under the arm and waterproofing.In windy and rainy environments, the wearer can cover their head with the hoodie 14. When it is not raining or the rain is light, the transparent waterproof protective panel 16 can be removed. In heavy rain, the transparent waterproof protective panel 16 can be magnetically attached to the first magnetic block 15 inside the brim of the hoodie 14 via its internal second magnetic block 17, thus fixing the transparent waterproof protective panel 16 to the front under the brim. Both sides of the transparent waterproof protective panel 16 are coated with a hydrophobic coating to prevent rainwater and breathed moisture from forming a water film and fog on the front and back surfaces of the panel, ensuring clear vision for the wearer. The transparent waterproof protective panel 16 is made of PC material. The overall structure is lightweight and thin, with good transparency, strong impact resistance, and good high and low temperature resistance. It is not easily deformed under wind force, and at the same time, it prevents rainwater from directly hitting the face and causing discomfort. It improves visibility and comfort in inclement weather. In summary, this utility model achieves comprehensive protection and good wearing comfort through a combination of multiple waterproof structural designs and breathable ventilation modules. In particular, the chest, armpits, and face areas, which are prone to water ingress or lack of breathability, adopt structural optimization solutions, possessing comprehensive functions such as waterproofing, windproofing, breathability, water diversion, and visibility. It effectively improves the practicality, weather resistance, and user experience of the rain jacket in complex outdoor weather conditions.

[0057] The circuits, electronic components, and modules involved are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. The content protected by this application does not involve any improvement to the software and methods.

[0058] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0059] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of this utility model, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of the utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A seamless jacket having a waterproof function, characterized by: The garment includes a body (1), sleeves (2) connected to both sides of the shoulders of the body (1), a placket (3) on the front of the body (1), a waterproof flap (4) connected to one side of the placket (3), a waterproof zipper (5) installed along the edge of the placket (3) on the front of the body (1), and oblique drainage channels (7) on both sides of the placket (3) on the front of the body (1). An underarm moisture-wicking module (8) is located below the connection point between the body (1) and the sleeves (2). The garment includes a moisture-wicking channel (10) located at the bottom of the sleeve (2) near the body (1) along the front-to-back direction, a two-way zipper (9) installed inside the moisture-wicking channel (10), a rainproof cover (13) located below the moisture-wicking channel (10) and connected to the body (1) and sleeve (2), and a waterproof moisture-wicking layer located inside the moisture-wicking channel (10). A hood (14) is connected to the top of the back side of the neckline of the body (1), and a transparent waterproof protective panel (16) is provided below the brim of the hood (14).

2. The seamless jacket with waterproof function according to claim 1, characterized in that: The garment body (1), sleeves (2), and hood (14) are all formed by hot-pressing and bonding a surface water-repellent layer, a breathable middle membrane, and an inner skin-friendly fabric to create a three-layer integrated structure.

3. The seamless jacket with waterproof function according to claim 1, characterized in that: The oblique drainage channel (7) extends from the placket (3) to the bottom of the garment body (1). Its cross-section is a "V" shaped groove, 3-5 mm wide and 0.5-1 mm deep, and its surface is covered with a hydrophilic drainage membrane coating.

4. The seamless jacket with waterproof function according to claim 1, characterized in that: Velcro (6) is provided on the back of the waterproof flap (4) and on the other side of the flap (3).

5. The seamless jacket with waterproof function according to claim 1, characterized in that: The waterproof flap (4) and rainproof cover (13) are both made of elastic polyurethane waterproof fabric.

6. The seamless jacket with waterproof function according to claim 1, characterized in that: The waterproof and moisture-wicking layer includes a breathable elastic mesh fabric (12) disposed on the inside of the garment body (1), and the breathable elastic mesh fabric (12) is covered with a waterproof film (11) on the side near the moisture wicking channel (10).

7. The seamless jacket with waterproof function according to claim 1, characterized in that: The transparent waterproof protective panel (16) is coated with a hydrophobic coating on both sides.

8. The seamless jacket with waterproof function according to claim 1, characterized in that: The hoodie (14) has a first magnetic block (15) in the lining at the brim, and the transparent waterproof protective panel (16) has a second magnetic block (17) on the inside, and the second magnetic block (17) is magnetically connected to the first magnetic block (15).

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