This pump is specifically made for those whose penis size is 3 to 5 in. when erect. Used in the bath or shower, it uses the power of water. The pump covers the entire penis, producing increased girth along the whole length of the shaft, while preventing it from bending. Simple to use and can be operated by one hand. The slow pulsating action when using it allows the free flow of blood in and out of the penis. Users might experience an increase in stamina, sensitivity, virility, strength of erection, and intensification of orgasm through regular use. Features Swivel Bellows and Super Flow Latch Valve system. Measures 15 in. by 7 in. by 7 in.