Experience the power of rapid and reliable results while unleashing your maximum potential of stronger, more powerful, and longer-lasting erections with the Max Boost Penis Pump! The in-line, manual piston-action pump design means that everything you need to start growing is built into the pump itself. No need to attach hoses or handles, no need to remember to recharge batteries, and no loud pump motors to ruin your discretion. Simply insert your penis, pull down on the pump head and release. You will be swelling with power in no time! The motorless design makes the Max Boost perfect for use in the bath or shower.For a heightened experience, try filling the tube with water before pumping.