Andibro Eyeglasses Strap Eyewear Retainer 12 Pack, Eyeglass Straps Cords Eyeglass Holders Around Neck for Men Women(black)

                             
Specification:
Material:  Nylon / Silicone
Color: As the picture shows
Single product size:66x0.66cm/26x0.26in
Silicone ring buckles size: 2.15x0.66x0.43cm/0.82x0.26x0.17in