The Screaming O RingO Rangler Cannonball is a super stretchy erection ring that keeps him harder longer with a fuller erection, mind blowing orgasms and premature ejaculation prevention. It is also great for keeping condoms in place and an excellent addition to any penis pump. Choose your favorite (or try all 3) and saddle up for a firm, hard ride! Reusable fun no batteries required. SEBS silicone. Latex free and phthalate free. Waterproof.