Maximise the pressure to maximise your size with the Bathmate HydroXtreme 5. The benefits of the hydromax pump range the hydroxtreme comes with a added hand pump to add the extra pressure in your hydro pump for penis enhancement. The HydroXtreme5 is designed for users measuring up to 5 inches when erect, with the effects of Bathmate pumps being particularly pronounced at this size. Like all Bathmate Penis Pump the Bathmate Hydroxtreme is easy to use. It can be used in the bath or the shower. just fill it up with water, release the valve and give it a pump. Work your manhood for extra length and girth. While there’s no strict minimum length for using the Bathmate HydroXtreme5, if you measure below 3 inches, you won’t see the best possible results from the product – we’d recommend starting off with traditional jelqing exercises first then moving to a Bathmate after.