The High-Vacuum penis pump and cylinder kit has everything you need and it’s easy to use. Soft penis sleeves ensures an air-tight seal and while the one hand “pull” handle makes pumping easy. Simply grip in the curve of your hand and pull up with your fingers to start suction. It comes with a flexible non-crimp hose with push-button release valve. As soon as you’re pumped to full volume, press the release valve and the air will be dispersed safely and easily. The vacuum cylinder is made with clear, safety-ensured plastic. It’s length markings help you see just how much progress you made​​​​.