The Ofinity Plus Vibrating erection ring gives men an (almost) eternal erection! Isolation design constricts blood flow for concentrated enhancement that lasts and lasts and accomodates almost any size member. This stretchy cock ring has one purpose: to help keep his erections harder for longer while helping to prevent premature ejaculation. Simply stretch the top ring around the shaft and the bottom ring around the testicles and postion them against the base of the body-they will fit tight and snug in order to slow circulation and help him maintain a stronger erection and last longer in the bedroom. This dual action sex toy for men also helps increase sensitivity and promotes more intense and powerful orgasms, resulting in better and more satisfying sex with no limits! The middle mini motor is positioned to provide stimulating massage in the sensitive area between the shaft and the testicles while sending powerful vibration throughout for an enhanced experience.