The main goal of using a pussy pump is suction which increases blood flow to the desired region, which then results in a whole load of different and interesting benefits.

Chief among them is the increase in sensitivity to the area, which makes each touch and stroke feel more intense. Both vaginal and clitoral pumps enhance sensitivity, allowing users to experience more intense stimulation, subsequently making sex and masturbation feel even better. Vaginal pumps increase the blood supply to your vagina which swells the labia, while clitoral pumps create a vacuum around the clitoris to boost blood flow also, temporarily increasing the size of the clitoris.

There's also an aesthetic element: the swollen, enlarged look which pussy pumps give to the vulva are a real turn-on to some people. For individuals inclined towards BDSM, it can also feed into power play scenarios, fetish or (especially when it comes to hand-pump versions) medical role play.