shoelace

Abstract

As shown in the reference diagram showing the names of each part, this article is a shoelace having a central part and uneven parts arranged on both ends. As shown in the reference diagram showing the state of use, the central part is configured to be easily stretchable, and is used by passing it through a shoelace hole. This allows the shoe to fit the foot while mitigating the feeling of pressure even if the shape and volume of the foot change due to weight, edema, etc. In addition, the uneven part is configured by alternating convex parts (spherical parts) that are easily stretchable and concave parts that are difficult to stretch, and when both uneven parts are tied at the top of the shoe, the uneven parts intertwine with each other, thereby making it extremely difficult to untie the knot of the lace. The diameter of the central part is about 7 to 9 mm. The convex parts of the uneven part have a diameter of about 3 to 5 mm. The length of the entire shoelace varies depending on the shape and size of the shoe, but is about 50 to 120 cm. When the length of the entire shoelace is 120 cm, the uneven parts at both ends are about 25 to 30 cm each, and the remaining length is the length of the central part.

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