Material :The eyeglass chain is made of high quality alloy and the legs are made of silica gel,electroplating, glasses set foot in the tail of the movement to prevent slipping glasses.
Eyeglass Chains have specially designed Adjustable Universal Connectors that fit most glasses frames & arms. From narrow to wide, the Anti-Slip loops will securely and snugly hold on to your glasses. Works with prescription glasses, sunglasses, reading glasses, safety glasses, and more