Elastomer Set Blue, Purple and Pink Set. For a cock ring fit that's snug and comfortable, it's hard to do better than elastomer. Because of its flexibility, elastomer is the ideal material for cock ring beginners. Spartacus elastomer is compatible with all silicone and water-based lubes. Now elastomer is compatible with your changing moods, too: try a three-pack and triple your pleasure. Cock rings when worn around the base of the penis and testicles, many users find that cock rings increase sexual pleasure. Prolong rings, erection enhancement, climax control rings, cock rings. A water based lubricant is recommended. Spartacus a passion for quality.