The powerful suction action increases with each twist making your nipples and areola swell. Both partners will love the look and feel of your puffy pert nipples and you’ll love the increased sensitivity and sensations. Place the clear cylinder over your nipple and lower the suction dial counter-clockwise until its flush with your skin. The smooth cylinders feel great against your skin and stay in place. With each turn of the twist dial the nipple sucker will increase blood flow and suck your nipple into the cylinder tube. Once you unscrew the dial and relieve the pressure your nipples will remain hard and perky.