Masturbator with viewing window. The Viewtube Masturbator has been designed to enhance visual stimulation. This sex toy allows you to be the star of the show by observing yourself through the transparent outer shell. The soft sleeve is lined inside with rows of stimulating ridges and nodules to provide an exceptional experience. The circumference of the sleeve is 22 cm. The skin-like flexible pleasure canal has a diameter of 5 cm. For even more lifelike sensations and to protect the material, we recommend using a water-based lubricant during use. The removable pleasure tunnel should be cleaned with soap and water after each use. To extend the lifespan of the masturbator, it is ideal to use a renewing powder at the end of the cleaning process. This ensures that the material does not stick together and that the lifelike feeling is maintained for a long time.