The Hydromax 8 penis pump from Bathmate is the worldandrsquo;s most effective hydro vacuum erection device on the market. Fueled by water instead of air, the patented Hydromax pump provides consistent pressure around the penis, allowing for uniform expansion of the tissues. This revolutionary design increases the size and girth of the penis with long-term results. The Hydromax also improves penile blood flow, which creates more rigid erections, even when the pump is not in use. **The Hydromax 8 model is meant for current erect length 6- 8.5 and girth up to 7 circumference (please keep in mind - every model has approximately 1.5 room for growth)** Provides the maximum, safe vacuum pressure allowable by the FDA for superior gains, including bigger, harder, and longer-lasting erections Designed for easy use in bath or shower Patented hydro-vacuum design uses water, instead of air, to create powerful and uniform suction, allowing for a full and even expansion of the penis Soft sealing, full support comfort insert reduces pressure and gives greater comfort around the base of the penis and testicle region Superflow latch valve system allows for single-handed filling in the shower Metric and imperial guidance scale, with an easy-to-view area, for measuring your size and girth gains