The Ofinity Plus is a vibrating double erection ring featuring a unique isolating design that helps constrict blood flow to prevent premature ejaculation and promote stronger. harder erections. The top ring is worn around the penis while the bottom ring stretches around the testicles. and the middle motor positions perfectly to buzz against the sensitive zone in between. The results are more intense orgasms and longer-lasting sex! - Reusable - Replaceable AG10 batteries last 60 minutes - SEBS silicone - Latex- and phthalate-free - Wireless - Waterproof