For an impressive erection use this Electric Penis Pump. Treat yourself to a larger, thicker and harder erection, and see how your self-confidence grows. The opening of this penis pumps is made of soft and flexible silicone material that feels soft against your throbbing erection. The extra long vacuum tube is transparent so you can see how you grow. The penis pump is easy to operate with an on / off button. With the push of a button, you can reduce the pressure immediately. Once you are done, you can simply disconnect the vacuum hose from the cylinder and clean the pump with a toy cleaner and warm water. Properties of the Penis Pump: - Spring Cylinder: 22 cm - Diameter: 5.5 cm - Material: ABS, PVC, Silicone - Plasticizer Free: Yes - Color: black / transparent - Battery: 2 x AA (not included)