1Safe Material: The vacuum pump trainer is made of safe material, skin friendly, not causing damage to your skin, providing safe and convenient use experience.2Ergonomic Handle: The handle of the enlarger trainer is designed to fit your finger width so you can easily hook the handle and adjust the air pressure.3Transparent Sleeve: The vacuum extend pump trainer is equipped with a transparent sleeve, convenient to observe the training effect, convenietn for use.4Removable Design: The air vacuum pump trainer can be conveniently removed and cleaned, just remove the vacuum pump tube and clean it.5Effective Use: The erection trainer device can produce vacuum suction to accelerate blood circulation, can help realize better training effect after a period of time.Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-dadangjia