The Hydromax-series is the next stage of Hydro Pump evolution. Developing the innovative Bathmate, the new bellows pump and valve give 35% more power for even greater gains with more safety and comfort. By introducing new materials into the mix we have been able to create a unique bellows system that is not only stronger and more durable but also gives more flexibility, allowing you to create greater suction with less effort.The internal bellows size has also been increased and the number of convolutes reduced giving you plenty of room for increased girth expansion. If you measure around 5 and 7 inches when erect, you’ve found an ideal hydropump. With a powerful water-based design, Hydromax7 generates real, lasting results. Having a wide penis isn't a bad thing. However, it can make it hard to find a penis pump that’s ideal for you, stopping you from building maximum gains. We’ve designed the Hydromax7 Wide Boy just for you, with an extra-wide chamber giving you maximum pressure and real, significant results.