Tenga Original Vacuum Cup, 15.5 cm, Male masturbators for Men, The non-vibrating masturbator is suited for male auto-eroticism. The Tenga Original Vacuum Cup masturbator will provide blissful pleasure during masturbation and deliver many orgasms. Characteristics: for single use intensifies your pleasure during masturbation stimulation through negative pressure simulating suction for moderate stimulation of the penis TPE (thermoplastic elastomer) perfectly adapts to and retains body heat inner stimulation tunnel with ridges stretchy opening adjusts to any size or shape lubricated for immediate use waterproof design How to use: Follow the instructions provided. This product should be used with a water-based lubricant. Avoid using silicone-based lubricants.