Wireless Menstrual Cramp Relief Device - Easy and EffectiveThe Magic Behind Uses a combination of heat and massage therapy specifically designed to relieve period pain. It's the ultimate side effect free solution for any type of period pain. The heat component boosts blood flow, reduces inflammation, and relaxes any tension in your muscles. The massage releases endorphins, your body's natural period painkillers. Cordless design makes wearing it under your clothes comfortable and discreet. It has three modes: