Designed in a high-grade urethane foam that clings tightly to your cock as you thrust, the Premium Tenga Air Cushion Cup is the latest innovation from Japan's top sex toy manufacturer. This toy insulates the tunnel from the cup walls thanks to its air-cushion design, increasing the tightness and boosting the pleasure you receive. As with all of Tenga's onacups, there's an air-release hole at the end too, letting you control the strength of the vacuum, and subsequently the tightness and stimulation on your member.