A combination of the latest technology and the best materials for the most pleasurable masturbation sessions - Strong Edition - sturdy material for more stimulation - Elaborate texture inside the masturbator - 4 different stimulation areas - Customised vacuum stimulation via the pressure pad on the surface - Flip open design - Very easy to clean An elaborate texture (with 4 different areas of stimulation) inside the masturbator was created, thanks to advanced technology. While the glans get pleasured by a ball, numerous dots, grooves and waves stimulate the shaft. Pressure can be applied to part of the surface to increase the pressure inside the masturbator. There is an internal one-way valve that can create a strong suction effect. And the best thing about it: the flip open design with its seamless finish means that not one drop of lubricant leaks out. Even cleaning it is fun: just flip open the toy, rinse it under running water and then leave the Flip Zero stretched out over the arms, which also serve as a stand, to dry.