Clitoral Excitement Cylinders prove that pumping is not just for men anymore. Their a great reason to break out the pump and have some fun. Like traditional vacuum cylinders, they apply a vacuum to a focused area, immediately enlarging the clit, increasing blood flow and sensitivity. For those interested in clit enlargement, the pump can be removed, but the cylinder will stay vacuum sealed on the clit, allowing prolonged wear in comfort. Those just looking for a good time will find that their clit is immediately more sensitive, and that the whole experience is erotic. Sizing: There are three sizes available: Small (Opening is 1" in diameter) Medium (Opening is 1.25" in diameter) (preferred by most women to start)