This high quality Pump and Cylinder Kit allows you to do something no other sex toy can accomplish: temporarily expand the size of genitals and nipples, enhance sensitivity, and create an intense pulling sensation. The strong suction draws the genitals, or nipples, into a clear solid medical-grade plastic cylinder, and the quick release on the brass hand pump allows you to control the intensity and duration of the suction. Whatever you're pumping, we suggest releasing the suction after 10 to 15 minutes and enjoy the enhanced sensitivity. Great for S/M and gender play. Note: Please see our tips on How to Pump Your Cock and/or How to Pump Your Clit to enjoy your purchase safely.