Returns accepted within 3 days, only for damaged or wrong products. Return offered in the form of Product exchange. Buyer is the responsible for the shipping fees.
The retainer is made of Neoprene (a material used for sportswear i.e., wet suits ) and when in use sits at the back of your head for added security when wearing your glasses in sporting activities or while driving.
Both ends of the straps are running stitched with resulting ends designed to push on & grip the glasses arm ends. Simply twist the glasses until secure. It may be hand washed in warm water with a mild soap. Note: This Strap Is Not Recommended for Glasses with Thin Wire Arms & Slim Temples