Thank you for viewing. Size: Total length approximately 640mm Materials: Brass chain, glass, plastic beads A 2-way strap that can be used for both masks and glasses. You won't have to worry about where to put your mask or losing it. Easy to attach, just remove the silicone connection and attach the lobster clasp to the mask strap. When wearing glasses, you can attach the silicone to the temples of the glasses. A fashionable design that can be used as an accessory. #AzunyanStore