The Bathmate Hydromax is a water based hydro pump that is used in the shower or bath. There are several versions of this pump. The Hydromax and Xtreme series pumps are the newest additions (in late 2013) to the original Bathmate hydro pump line. We list the new benefits further in this post.
My current routine: 4-5 days a week, session of 5 sets of 5 minutes with a 2-minute break in between sets (around 30 minutes total). This routine is the best for me, and I'll explain why. The gains below are rounded down (because I'm using tailor tape and not being accurate). I am not going to be guessing what 1/10th of an inch I am at:
Hydromax Series 3 month Review and result
Permanent girth gain -> 0.50" (more notable - better erections)
12 to 24 hours girth gain -> 0.20"
4 to 6 hours girth gain -> 0.28"
1 to 2 hours girth gain -> 0.35"
Permanent length gain: 0.45" (similar to girth, improved EQ)
Those are not the squishy fluid size increases. I am completely rock hard at all of the above numbers. I know that some see these results as underwhelming, but for a skinny guy like myself, these gains are very noticeable. Additionally, not that I am not pressing the pump to its maximum potential.
Why this pump really works, study here http://www.myfolio.com/hydromaxseries and the biology of the penis so that the Bathmate product is safe to use because it has been clinically tested by ASPEN Clinical Research.
Overall, I am happy with the BM X40, and I believe that it's absolutely worth the purchase if you are willing to be patient. If I am able to add 0.2" to my girth gains in the next couple of weeks, there will be no question that this pump works and is a godsend for men that are below-average size in girth.
You can join them here https://www.themehorse.com/support-forum/users/johnbathmate/ and experience the real benefits.