Penis pumps function by creating a vacuum effect within the main cylinder. When the penis is placed in this vacuum chamber and the pumping begins, blood will flow into the penis at a heightened rate. Pumps therefore may assist with erectile function while also increasing the size of the penis. They also make great masturbators, especially for users that enjoy the vacuum sensation.
Bathmate hydro-pumps are unique because they use water instead of air to facilitate the vacuum. For many users, water-based pumps are more comfortable than pumps which rely on air.
Scroll down to shop the entire Bathmate collection. If you want to know where to start, use the following chart to help determine which pump to purchase: