Penis pumps have been around for years to help increase the penis length and girth. I remember the first penis pumps used air cylinders, but guys reported discomfort after using air pumps. Their penis would be sore, swollen or bruised. I suppose the cliché of "no pain, no gain" applies to the air penis pumps. Recently, however, penis pumps have increased in quality and comfort. Hydromax, a series of Bathmate products, is a revolutionary pump that uses water instead of air for a more even distribution of pressure and comfort.

Hydromax comes in different models depending on your penis size and whether you're a beginner or an advanced pump user. Some models have added bells and whistles, but the core function remains the same. The Hercules and Goliath are the original models, where as you might have guessed Hercules is the standard size unit and Goliath is the larger penis pump. The Hydromax X30 and X40 are new and improved versions which deliver 35% more power, helping you speed up the progress. The X30 is about the same size as the Hercules. The X-treme X30 and X40 models are similar size as their counterparts, with the added hose and handball pump, and extra bells and whistles. If you're not sure which model to use the official website has a useful online calculator to help you figure out which model works for your current penis size.

PROS:
	Uses water instead of air for added comfort, efficiency, and safety.
	Requires a session of only 15 minutes a day.
	Provides permanent size increase with repeated usage.
	Comes with a 60-day money-back guarantee.
CONS:
	Requires 6 weeks of use to see permanent results.
	Must use it daily to see results.