Tenga Original Vacuum Cup hourglass shape provides a sublime tightness. This is achieved by combining the curve in the midsection and a special one-way air valve on the silicon sleeve which creates a vacuum effect. The air hole at the top has a removable seal, allowing you to fully control the tightness level.
These advanced features, combined with an arousing "slurping" sound, and vibration, give you the feeling that you're enjoying a real deep throat experience. The cup itself has a soft, gentler grip for a maximum relaxing experience.
Tenga Original Vacuum Cup Features:
A special one-way valve creates a virtual vacuum inside the cup to deliver a sensual, deep sucking experience
