Tantus super soft cock ring is available in three colors: black purple and red. Each sold separately. These super soft silicone c-rings from tantus are broad for comfort and safety. A cock ring holds the testicles down and keeps the testes from contracting thus slowing down ejaculation. The constriction takes orgasm from about 6 seconds to up to 45 seconds. For best results apply lube to the inside of the ring then ease one testicle through at a time before finally pulling your penis through. Unstretched inside diameter of cock ring is 1.5 inches stretched diameter up to 4.75 inches. Tantus expert advice: when a man ejaculates the prostates job is to shut off the bladder and push seminal fluid down the urethra. The testicles then contract and add sperm to the seminal fluid with the result of ejaculation. A c-ring holds the testicles down and keeps the testes from contracting thus slowing down ejaculation. Prolong ring is made using phthalate free non-toxic materials silicone. Always clean before and after use. Climax control cock ring non-vibrating ejaculation prevention.