Twist XL Nipple Sucker - The pumps that make your nipples both bigger and more sensitive.

Place the pumps over your nipples and turn the knob and feel how a vacuum is formed with their suction cups. Turn until the desired vacuum is reached and see how your nipples grow.

The feeling that arises is powerful and feels just like when someone sucks on them.

Loosen the pumps by turning the knob in the other direction and now enjoy your lovely nipples which are much more sensitive than usual.