The AB Silicone Pumping Sleeve is a super soft silicone sleeve that is most commonly used as a enhancer for pumping sessions. The sleeve provides the extra constriction so the pressure may be increased, thus increasing cell separation/fullness. Increased length gains have been reported among many users of this during pumping.  Use has shown that constricting the cells during enlargement processes using vacuum pressure will yield greater results as opposed to a non-constrictive session. It is simply too amazing to describe how much it enhances the routine, anyone who is using a pump of any kind should be using an AB Silicone Pumping Sleeve.