Keepons Superstretch Black Anti-slip Eyeglass Retainer Sleeve Premium Grade Silicone Anti-slide Stay Put Temple Tip Removable Ear Hook Lock Comfortable Rubber Glasses Holder Sunglasses Sports Stop Slipping Grip Discreet Spectacle Frame Eyewear Aid, Model: KPNS-STRBLK Genuine Keepons eyeglass retainers. Don't buy fakes that rip easily / are made of toxic materials. One year complete warranty. Keepons is the world's biggest maker of silicone eyeglass retainers. PRICE SHOWN IS FOR 1 PAIR OF KEEPONS (left and right piece). They effectively stop eyeglass slipping. Keepons are comfortable and practically weightless. Allergy-free, barely noticeable when worn. Very easy to put on and remove. Washable, long lasting.