Designed for a penis size of 5 to 7 Inches when Erect. The Bathmate Hydromax 7 Wideboy is the ultimate male hydrotherapy pump designed to be used in the shower or bathtub. Utilising the amazing power of water Bathmate Hydropumps give the user an erection in a completely safe, controllable manner and remain the most sophisticated external penile rigidity devices available. Manufactured using state of the art dermatologically tested materials Bathmate Hydropump are certified as skin safe, latex free, phthalate free and covered by a comprehensive two-year guarantee. Due to the consistent nature of hydraulic pressure created by the Bathmate range of pumps, the users penis will increase in girth a lot quicker than it will in length. This is because the surface area is greater around the girth of the penis than the length. This will result in the penis touching the sides of the pump, meaning the hydraulic pressure will not be able to expand the girth of the penis further.