Elastomer Set Black, Blue and Clear 3 Piece Set. For a cock ring fit that is snug and comfortable, it is hard to do better than elastomer. These double wide cock rings are made from 100% skin-safe elastomer. They can be stretched beyond imagination. 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 Catalog page 22.