Bathmate Sizing Guide
Compare the Bathmate Hydro, Hydromax and HydroXtreme pump sizes with the Bathmate Size Guide & buy in Australia. To achieve maximum hydraulic performance the correct size pump must be used.
Use the size table to choose the Bathmate Pump that is right for you
| Bathmate Pump | Current Erect Length | Current Erect Girth |
| Hydromax3 | 1-3” (up to 7.5cm) | Up to 6” (15.5cm) |
| Hydromax5 / HydroXtreme5 | 3-5” (7.5-12.5cm) | Up to 6” (15.5cm) |
| Hydro7 / Hydromax7 / HydroXtreme7 | 5-7” (12.5-17.5cm) | Up to 6.5” (16.5cm) |
Hydromax7 Wide Boy / HydroXtreme7 Wide Boy | 5-7” (12.5-17.5cm) | Up to 7.5” (19cm) |
| Hydromax9 / HydroXtreme9 | 7-9” (17.5-23cm) | Up to 7.5” (19cm) |
| HydroXtreme11 | 9-11” (23-28cm) | Up to 8.5” (21.5cm) |
The Bathmate range of Hydropumps operate using hydraulic pressure around the penis. Because the surface area of the penis is larger around the girth than it is the length, it is the girth that users will experience an increase in first, often resulting in them touching the sides of the pump meaning that the hydraulic pressure will not be able to expand the girth of the penis further. In addition, the hydraulic pressure around the penis reduces as the space increases, which is why in order to obtain maximum hydraulic performance, the correct size pump must be used.