A Wampy is an instant warmer that warms up to about 50-55° when activated and stays warm for up to 2 hours. Whether at home or on the go - you can activate the Wampy at any time by simply twisting it and inserting it into the pocket of your panties. The pockets are sewn into the underpants from the inside and are invisible from the outside. The heat reduces pain and has an antispasmodic effect. You can reuse the heat pads by simply placing them in boiling water for 10-15 minutes.