The Screaming O Ofinity double erection ring gives men an (almost) eternal erection with a unique isolation design that constricts blood flow for concentrated erection enhancement that lasts. The top ring stretches around the shaft while the bottom ring stretches around the testicles, each with a snug and tight fit that keeps erections harder for longer. Perfect for cock ring fans who do not want the added sensation of vibration. Features stretchy double ring that lasts and lasts. Unique isolation design for the ultimate erection. Elasto-stretch rings accommodate almost any size member! Additional information: reusable. SEBS Silicone. Latex free. Phthalate free. Wireless vibrating cock ring. Waterproof vibrations.