Rubber Ring Black Large cock ring with 2 inches opening. Bulk Weight: 0.3 ounce. Safe and pure for body and pleasure. Rubber adornment ring is made using phthalate free, non-toxic materials Thermoplastic Rubber TPR. 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. Category: For Men, Rings & Sleeves, Sleeves. Rubber Ring is a registered trademark for California Exotic Novelties. Sex toys and sexual wellness. New high resolution images added.