Tenga 3D Spiral, 11,6 cm, Male masturbators for Men, Characteristics: designed specially for men for intense stimulation of the penis intensifies your pleasure during masturbation inner stimulation tunnel with ridges stretchy opening adjusts to any size or shape ideal as a gift waterproof design can be used in the shower or bath drying stand included handy and storable travel companion easy maintenance silicone How to use: Make sure to maintain and clean the device regularly. This product should be used with a water-based lubricant. Avoid using silicone-based lubricants. After use, wash with lukewarm water only.