The Elastic retainer features an ultra low-profile construction specifically designed for those who are after a lighter-than-air experience. wear helmets or hats. or favor thin frame sunglasses. Made from a stretchy cotton and lycra blend. this retainer offers all-day elasticity. allowing it to easily move with you during your activities while keeping eyewear secure. This retainer is equipped with a sliding bead to adjust for fit. and is still proudly made in the USA.