Bathmate Hydromax 5 The Hydromax Series (formerly Hydromax X-series) is the next stage of Hydro Pump evolution. Developing the innovative Bathmate, the new bellows pump and valve give 35% more power than the original Hydro7 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 convoluted reduced giving you a more comfortable experience. he addition of our new super soft comfort pads have been a revelation in providing a tighter and more comfortable seal against the body, this means less pumping and less loss of suction. The soft-touch outer edge feels great against the body and the rigid inner tube provides a strong and sturdy shield around your penis from the inside of the bellows. Comfort pads are completely removable for easy cleaning and general hygiene. The most important change, and certainly the most technically challenging, is the engineering of a new valve that controls the flow of water out of the device. By adding a new latch (or switch) to the valve you can now close the valve to prevent water escaping when filling. This small but important change now allows you to fill the device with only one hand leaving the other free to sort yourself out or get your accessories ready.