Like many other vaccum pumps for men' penis exercise in our store, this product works via manual vacuum pumping to increase the penis' pressure. The transparent vaccum cylinder allows you to see your cock get bigger, while the accurate gauge lets you know how much pressure you've pumped. What makes this type of product differ from others is you can get another shrink-ring entrance in the shape of female's vulva, which is made of soft, elastic and comfortable TPR. Good Quality and Manual Control! Very nice penis trainer for you to use at your spare time.

Notice: Better effect to use with lubricants.

• High polymer material,non-toxic and odorless.
• Transparent cylinder connects with solid handle, Comfortably soft rubber cushion with stretchy hole.
• It can effectively make the penis thicker and longer.
• Quick release valve to release the vacuum at any time. Accurate pressure gauge, made to adjust the vacuum suction.
• Manual vacuum-pumping technology, safe and convenient. Detachable device, convenient to carry and easy to wash.

High polymer material,non-toxic and odorless.ZB1088