Traditional penis pumps have long relied on air pressure to encourage blood flow into the shaft. However, Bathmate’s HydroMax Pump uses a water-based system that lets users achieve better results in size, girth and comfort. In fact, using warm water is actually better for your erection as it promotes growth more evenly and naturally increases blood flow. Using water also prevents injuries caused by the inconsistencies of air pressure, therefore making it safer and more effective.

When the hydropump is filled with water and placed over a flaccid penis, the specially contoured base is then pressed into the body to create a tight, secure seal. As you pull the pump toward you, a valve at the top of the pump allows water to leave the tube while preventing air from leaking back inside. This creates a vacuum inside that pulls blood into your shaft to boost your size and improve your erection. (Tip: Since water is ejected you will probably want to use the Hydromax Pump in the tub or shower.) Pressing on the valve quickly and easily breaks the suction so you can remove the pump and marvel at the results.
Plus, as a medically classified penis pump, Bathmate is a registered medical device that is certified and fully tested so it cannot produce dangerous levels of pressure as opposed to other pumps on the market.
How to Use Your Bathmate Hydromax in the Shower
It’s important to always read and consult the user manual that comes with your specific model of pump to ensure safety and proper results.
- Give your genital area a quick massage to relax the skin.
- Push and hold the black pip in the closed position by pressing the black pip to either side with your finger and invert the hydro pump under the shower head until full of warm (not hot) water. You can also choose to remove the comfort insert while filling, just make sure to replace it before use.
- While continuing to hold the black pip in the closed position, insert your flaccid penis and press the Hydromax against your body to create a comfortable seal. Just make sure your testicles are below the seal. You don’t want them getting sucked in by the vacuum.
- Set the valve to the open position by returning the black pip to the center and angling the pump slightly upwards.
- Start the pumping process until you reach a comfortable maximum pressure.
- Pump slowly and evenly and wait for up to 3 minutes, adding pressure as needed, and let the Hydromax work its mojo.
- When you’re finished, simply push the small button in the valve to break the vacuum seal then remove the pump from your penis.
- Massage the penis then repeat if desired.
- Now you’re ready for sex.
Using Your Hydromax Pump in the Bath
Again, refer to the user manual for your specific pump to get the most out of your Bathmate.
- Give your genital area a quick massage to relax the skin.
- Fill the Hydromax with warm (not hot) bathwater. You can also choose to remove the comfort insert while filling, just make sure to replace it before use.
- While continuing to hold the black pip in the closed position, insert your flaccid penis and press the Hydromax against your body to create a comfortable seal. Just make sure your testicles are below the seal. You don’t want them getting sucked in by the vacuum.
- Set the valve to the open position by returning the black pip to the center and angling the pump slightly upwards.
- Start the pumping process until you reach a comfortable maximum pressure.
- Pump slowly and evenly and wait for up to 3 minutes, adding pressure as needed, and let the Hydromax work its mojo.
- When you’re finished, simply push the small button in the valve to break the vacuum seal then remove the pump from your penis.
- Massage the penis then repeat if desired.
- Now you’re ready for sex.
Bathmate FAQs
Do I need to be in water to use the pump?
While you may be more comfortable in the shower or tub you do not need to physically be in water to use the pump. It works just fine in the air if you use warm water in the pump itself. However, since water is released from the valve during the pumping process, we recommend using it some place where you can easily clean up.
How long should I use the Bathmate Hydromax Pump?
For long term results 10 – 15 minutes a day is all it takes, using your Bathmate for 5 minutes at a time.
How often should I use the Bathmate Hydromax Pump?
For the best results, it’s recommended to use your Hydropump 5 days a week with 2 days off. Think of it as going to the gym, but for your penis. Bathmate even provides an example of a “workout” schedule to help maximize results:
- Monday - Workout day 1 (max, 15 minutes)
- Tuesday - Workout day 2 (max, 15 minutes)
- Wednesday - Rest day 1
- Thursday - Workout day 3 (max, 15 minutes)
- Friday - Workout day 4 (max, 15 minutes)
- Saturday - Workout day 5 (max, 15 minutes)
- Sunday - Rest day 2
Users typically see longer-lasting results after about a month of regular workouts.
Is it safe to use?
Absolutely! Not only do the pumps feature a safety valve in the tip that lets you quickly and easily reduce the pressure, but all pumps are also tested to ensure unsafe levels of pressure can never be reached within the pump.
What’s the difference between Hydromax models?
All Bathmate Pumps in the Hydromax series use water pressure for safe and reliable results and feature the same innovations. The real difference is that there is a pump for every penis size allowing the user to choose the correct model for their body for a better pumping experience.
Bathmate Hydromax5: For those measuring up to 5 inches when erect.
Bathmate Hydromax7: For those measuring between 5 and 7 inches when erect.
Bathmate Hydromax9: For those measuring between 7 and 9 inches when erect.