The 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. Reusable. SEBS, latex and phthalate free.