Discreet Heating Patches work for up to 8 hours to soothe cramps and provide help from period pain.  Our pack of two easy-to-use heating patches instantly warm to a comfortable temperature to soothe cramps, increase blood flow, and relax muscles. Use on the lower abdomen to ease cramps, or on the lower back to alleviate aches and pains related to menstruation. Adhere the patch to the outside of your underwear or over tights etc to wear as you go about your day.  Once they go turn cool after around the 6-8 hour mark gently remove them and discard.  Not to be used with other creams or rubs that cause heat. NO Microwave needed! Suitable for:- Menstrual cramps and Post-partum Ingredients: 50% Iron Powder, 23% Water, 12% Carbon, 10% Vermiculite, and 5% Sodium Chloride.   Our Warm Patches are air-activated and will begin warming as soon as the individual plastic wrapper is opened. Remove Heating Patch from plastic wrapper and peel-off protective backing to expose adhesive. Place the adhesive side of the heat patch over the area you wish to treat - on the outside of the underwear. Do not apply adhesive directly to the skin.