Starting with the first and original, the Bathmate Hercules. This was the worlds first water based penis pump which was invented in 2006. After a decade of great success it has evolved into newer more advanced models, that have increased pressure and more precise control. The newer Hydromax models are available in sizes from 3 inches up to 9 inches when erect.
TheBathmate Hydropump is still the World's Best Selling Penis Pump, used by over 1,000,000 men in 90 countries around the globe.