C-rings, also known as restriction rings, restrict the blood flow into the penis, helping to maintain an erection. C-rings also create a temporary increase in penis girth and are universal to providing extra texture to the penis for increased pleasure during intercourse. Enjoy a mind-blowing climax like never before with these c-rings recommended by our sex-perts. Every ring is designed with high-quality silicone along with the latest and greatest pleasure technology so you can redefine your erection. Go for a modern take on a simple design or get adventurous with an app-controlled option. C-rings are commonly worn around the base of the penis and testicles to increase stamina.