Premium silicone, with less stretch than the Super Elastique 3000 but more stretch than The Collar, you can wear it longer for maximum support and comfort. Dura Technology's made-to-fit materials not only stand the test of time but also stand wear and tear. Rock Solid cock rings combine quality and comfort for your best performance. Comes in black and has two sizes: - Medium 1.5 inches and - Large 1.75 inches. And a tri-pack in two colors black and translucent: Sizes: - 75 inches - 1-inch - 1.25 inches. Rock Solid Tri-Pack Gasket Translucent Wearable Erection Enhancer Non-Vibrating Penis Ring Features: • wear longer for maximum support and comfort • compatible with silicone personal lubricants • easy to clean with soap and water.