This water pump does an absolutely sensational job of increasing blood flow (and therefore temporary enlargement) wherever it's applied! Suction is a truly delicious feeling, and by putting it on a dick, a vulva, or a breast, you're essentially increasing the sensitivity in that area while expanding the surface area -- and exposing more delicate nerve endings. While this water pump is marketed as a "penis enlargement pump" (and a permanently enlarged penis is not something *we* guarantee) it certainly goes above and beyond what any air pump is capable of. For more thorough instructions on how Hydro7 works, check out the user's manual! This size is ideal for those who are 5 to 7 inches when erect. Length: 7" Diameter: 1.81" Hard plastic Compatible with hybrid & water based lubes Applicable in bath, shower or air 2 year manufacturer's warranty
