Three uniquely contoured, air-activated heat presses that each deliver hours of relief from period or endometriosis pain— like traveling heating pads that are sleek and wearable! They easily slip inside the pocket of any Nyssa underwear or leggings or feature an adhesive back to be worn with any undergarment. Remove from protective wrapper, unfold, and feel the press start to warm to a maximum temperature of 136 degrees Fahrenheit. Place inside front pocket of Nyssa underwear or leggings or adhere to outside of any underwear, front or back. Use once and then discard. Do not microwave. Do not place directly against skin. Contents: Iron, Water, Kieselguhr (diatomaceous earth), Activated Charcoal, Sodium Chloride.