Have a quick fix on hand for your aches and pains with thishot or cold relief wrapr works on swelling pains bruising migraines aches and minor feversr place flat in the fridge or freezer for a cooling reliefr or in themicrowave for a heated therapeutic sensationr reusable long lasting and environmentally friendlyr put it in the fridge for 1 hour or in the freezer for 40 minutesr or microwave wrapped in wet paper towel at 7 second intervals for 30 secondsr mater