| 摘要 |
A fastening system for footwear that includes a strap that functions as a restraining element to more tightly secure the footwear to the wearer's foot when the strap is under tension. The strap could be a unitary strap made of a material with a negative Poisson's ratio. The strap can also have a composite structure, with an outer layer and an inner layer, where the inner layer is made of a material with a negative Poisson's ratio. As the strap is placed under tension in a lengthwise direction, the thickness and/or width of the strap may expand to increase support. |
