Why Jack it when you can Jack-It With its silky soft clear exterior, and liquid-like colored interior, there has never been a stroker like the Duo. Add a drop of lube to the colored, textured channel, and the sensation is absolutely mind boggling. What`s more, its ample size is meant to fit a man`s hand, and its exterior grip provides no-slip, non-stop pleasure. Its revolutionary design instantly transmits additional sensation with every flex of your hand. Into strokers? You don`t know jack - until you JackIt! Smooth, tight opening for heightened sensation starting right at entry. Jelly-nubs and ridges for the feel of real.