The Hydromax Xtreme X40 is a luxury penis pump that you use with water. Fill the pump with lukewarm water, place it over your penis and press the base against your body. The water will slowly leave the pump and the penis will be vacuumed for more volume. The Hydromax Xtreme X40 is the most powerful pump of the collection and is suitable for men with a penis length of 17,5 to 23 cm (during erection). The pump comes with many extras such as: Luxury case Hand pump Flexible tape measure Lubricant Shower strap Comfort pad Cleaning kit