Chums original cotton eyewear Retainer is an all-cotton, easily adjustable product that put us on the map. The original cotton eyeglass Retainer has it all: quality, comfort, and the ability to fit most standard frames. This Retainer has comfort and security for your eyewear. It is seamless 100 percent cotton knit tubes, with surgical tubing ends, slide over ear pieces. Sliding BEAD in back of head adjusts snugness. Retainer is machine washable. Made in the USA.