Mask tie fasteners and masks

Abstract

A mask and a mask with a fastening device are provided to prevent the straps from shifting and maintain a good seal with the face. The mask (1) has a mask body (10), an upper strap (20), a lower strap (30), and a fastening device (40). The mask body (10) covers the mouth and nose. The upper strap (20) is connected at both ends to the two sides (10a, 10b) of the mask body (10). The lower strap (30) is connected at both ends to the lower part of the two sides (10a, 10b) of the mask body (10) than the part connected to the upper strap (20). The fastening device (40) fastens the upper strap (20) and the lower strap (30) to the left and right sides of the wearer's head.

Images