Croakies Unisex Adult Stealth Floater Eyewear Retainer 80% Nylon/ 20% Rubber Made in US 80% Lycra 20 closed cell foam Buoyancy level to Float a Plastic Frame and Glass Lens or Metal Frame with Plasitc Lens. Unique backstitch prevents thread failure. Colorfast, Washable, Air Dry, No Bleach USA