Silicone eyeglass stopper: Hold the tip of the temples and hook it to your ears to prevent your glasses from floating when exercising or studying downwards, or doing housework. Size: Approx. 1.4 x 0.6 inches (3.5 x 1.5 cm); Material: Silicone resin; Country of Origin: China; Note: Compatible Sizes: Temple: Approx. 0.2 - 0.4 inches (4 - 10 mm).