Tenga Air Cushion Standard: Fantastic stimulation made possible by the unique air-cushion mechanism. The World's first masturbation cup: uses an air-cushion mechanism without relying on the elasticity of a sponge or urethane materials. The ultimate, never-before-experie nced clinging sensation has been achieved by allowing free changing of the air pressure in the 24 air-cushion chambers. This special Soft Edition gives a softer, gentler grip for a more relaxing experience!