The best penis pump is here! designed to be used with water or with air. Includes different silicone pads for perfect fit and has interval pumping for fastest results! Size Measurements:  Insertable Length: 7 inches Cup Diameter: 2.4 inches Gentle and Safe: The pump is engineered with a gentle suction mechanism, ensuring a safe and comfortable experience as it works with water. The soft, medical-grade silicone ensures a snug fit without compromising your well-being.Easy to Use: Our user-friendly design makes operation a breeze. Allows you to effortlessly control, letting you tailor your experience to suit your preferences.Durable Materials: Built to last, the 3 in 1 Waterproof Penis Vibrator Pump is made from high-quality, durable materials. You can trust in its longevity and effectiveness, providing you with a reliable companion on your journey to self-improvement. 3 in 1 Waterproof Penis Vibrator Pump creates more pressure than air does, so the stretching occurs evenly throughout the pennis, making it more elastic, and more prone to elongating. It is also mild on the skin, reducing the risks of microtrauma. BTW, it even tickles the nerve endings, making the process of stretching very pleasant. In short, hydro pumping is the safest and the most natural way of adding a few craved inches. Size Measurements:  Insertable Length: 7 inches Cup Diameter: 2.4 inches   Water temp shall be 50℉-107℉