The first alternating ice and heat therapy pack uniquely contoured to fit over women’s lower abdomen and uterus where period symptoms, endometriosis, and postpartum pains originate. Measures 8.5 inches in length and less than 0.25 inches in thickness so that it provides full, effective coverage while also being comfortable and feeling 'barely there' inside the pocket of Nyssa’s VieWear or FourthWear wear therapy underwear.