I think it's one of the best toy in my collection. I noticed right away the special spiral shaped internal part and the toy met all my expectations in this regard. Your penis should make its way through numerous turns and bends so there will be problems with the stimulation. Don't forget to rotate the toy in order to change the position. It gives new feelings but the end will be the same and you'll like it:) It's just like having sex with experienced woman who guides through her tunnels of lust and pleasure.