You may have seen similar devices to this suction pump in porn films, and for good reason - when you use a vacuum to pull blood into your sensitive bits, your clitoris and labia become engorged and hyper sensitive - perfect to get you going before a steamy night wiht your partner, or use it yourself before masturbating!
Simply place the clear cup over your vagina with a little lube to help it maintain the vacuum, and then use the hand pump to slowly create a vacuum and feel this unique experience for yourself!