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World’s first onanism cup to adopt an air-cushion mechanism without relying on the elasticity of sponge or urethane materials. The ultimate, never-before-experienced clinging sensation has been achieved by allowing free changing of the air pressure in the 24 air-cushion chambers.
All TENGAs have lubrication inside. The lubrication consists of: purified water, glycerin, sodium polyacrylate, phenoxy ethanol, and paraben (allergy tested in Japan).