Lasso Cockring. Lasso style cock ring is made using phthalate free, non-toxic materials Thermoplastic Rubber TPR tubing, ABS plastic slider bead. A water based lubricant is recommended. Adjustable cock ring with bead slides up and down to increase pressure. Please note this item when used over an extended period of time may cause bruising by acting like a tourniquet. Rubber tubing stretches to fit. Cock rings when worn around the base of the penis and testicles, many users find that cock rings increase sexual pleasure by prolonging male climax. Prolong ring, cock rings, sex toys for couples. Always clean before and after use.