Function: 1. Safe Material: The vacuum pump trainer is made of safe material, skin-friendly, no damage to the skin, ensuring safe and comfortable use. 2. Ergonomic Grip: The grip of the enlarger is designed to fit the width of your finger, making it easy to hook the grip and adjust the air pressure. 3. Transparent Sleeve: The vacuum pump trainer is equipped with a transparent sleeve, convenient to observe the training effect and convenient to use. 4. Removable Design: The vacuum pump trainer can be conveniently removed and cleaned, just take out the vacuum pump tube and clean it. 5. Effective use: The erection training device can produce vacuum suction to accelerate blood circulation, which can help you get better training effects after a period of time. Specification: Item Type: Vacuum Pump Trainer for Men Package List: 1 x cup with sleeves 1 x pump 1 x air tube 3 x silicone ring