Due to the constant hydraulic pressure created by the Bathmate pumps, the user's penis will increase in size faster than in length. This is because the surface area is larger around the circumference of the penis than the length. This causes the penis to hit the sides of the pump, preventing the hydraulic pressure from increasing the penis size further.
When this happens the user would normally switch to the Batmate HydroMax9, but many users have indicated that the increase in length is not necessary and the HydroMax7 would be sufficient, just the width of the HydroMax7 is not sufficient.
The science behind this is: to obtain maximum hydraulic pressure, it is important to use the pump for the right size penis. We always advise our customers to purchase a smaller pump (provided that the penis can easily fit into it), because then the hydraulic pressure will be optimal.
Using a pump that is too large will result in lower pressure around the penis, which means slower or no penis growth.
This is where the demand for the X30 Wide Boy lies. The Wide Boy has a wider girth but the same length as the X30, meaning that the optimal hydraulic pressure is maintained, resulting in faster growth.
