Here is a classic designed Vacuum Pump with automatic suction for male's penis.Pump makes the vacuum around the penis,that will produce pressure to promote the circulation, help enhanced erection hardness, increase penis size and sensitivity. With T-handle design, the suction is made by pressing the buttons, you can control and decide how much pressure to the penis.Vacuum physical helping erection has no damage or side effect on body. It's also a great sex toy, and is perfect for you and your partner to enjoy the greatest pleasures of life together. Notice: 1.Clean the device before use. 2.Apply some water-based lube to the edge of the sleeve to enhance suction. 3.Increase the pressure of the vacuum pump slowly. If get it too fast, maybe cause bruise and pain. 4.Product use effect varies from person to person.