This set of stretchy cock rings from Calexotics may look basic, but you will be surprised by the enhanced erection strength, stamina and satisfaction they deliver! They are made from transparent, flexible TPR (a type of synthetic rubber) which is phthalate free and body-safe. There are three sizes: small, medium and large. Each ring is adorned with bumpy beads that provide a pleasurable stimulation sensation. There are many ways to use the rings, either together or separately. You can place one over the base of the penis to maintain an intense, firm erection, or stack the three of them up. You can also slip them over the scrotum to pronounce your bulge, restrict blood flow and prolong your erection. It’s best to use water-based lubricant with these rings, and clean them after every use. Let the Island Rings take you to penis pleasure paradise!