Unlike most penis enhancement pumps, the Bathmate Hercules uses water rather than air to create a pressure to expand the penis and allow more blood to maintain a larger and harder erection. This product is getting rave reviews all over the world and can be used in the shower or bath. Also available in the larger "Goliath" version which is one of the biggest pumps we have ever seen. Bathmate say that by using water rather than air you get a much more consistent pressure and less risk.
Bathmate Hercules water pump