Our patented sensor design has a unique design which accurately measures pelvic floor muscle movments, not movements from the abs and thighs. This feature is unavailable with most other exercisers. The large display is intuitive and offers easy to interpret visual biofeedback. Progressively adjusteable resistance settings allows the user to exercise against the desired level of difficulty. Three exchangeable sensor sizes are offered for maximum comfort. Easy resistance control: the manual pump (to increase resistance) and the pressure release button can be operated with the same hand, which allows the user to easily exercise. The PelvIQ is very easy to clean . The top of the sensor, which touches the skin is detacheable and can be cleaned and steralized.