Elastomer C-Ring Relaxed Clear from Spartacus Leathers. Relaxed Fit Elastomer Cock RingThis very stretchy cock ring is made from skin safe, phthalate free elastomer. This ring may start small, but it stretches quite a bit, so it can be worn around the penis and testicles. 2.125 inches total diameter, 1.375 inches inner diameter, unstretched, up to 3 inches inner diameter when stretched. Elastomers Cock Ring from Spartacus Leathers. Categories: Bondage, Fetish & Kink, Love Rings, Couples Cock Rings, Mens Cock & Ball Gear. No Amazon Restricted. 2022.