GMS Optical Premium Silicone Anti-slip Eyeglass Retainer Sleeve Ear Hook Keeps Glasses From Slipping - Comfortable Sports Active Temple Tips for Eyeglasses (2 Pair) (Neon Green) Premium grade soft silicone for comfort and durability Anti-slip - Keeps glasses in place Easily adjustable to fit your face comfortably GMS Optical is located in the United States. 2 Pair (Available in Black, Brown, Clear, Neon Green and Neon Yellow)