This penis pump has a maximum internal length of 19.5cm and a maximum internal girth of 15cm. The tube measures 29cm in length and features a firm suction that keeps the pump close to his body as well as a comfort seal that allows him to use the Ultimate Power in comfort. This pump has a solid transparent cylinder and an On / Off dial for easy incremental speed control. Work your way from slow to fast paced vibrations in seconds. Elastic straps hold the removable vibrating egg and remote in place while you use the pump and the back slides open easily, giving you access to the batteries for effortless maintenance. This penis pump is easy to use, easy to clean and has a soft pneumatic pump action bulb. It’s a great option for men that want to improve their penis health as they improve blood flow and the quality of their erections as well as gaining size.