The Relief Pak Val-u Pak LiTE Cold n' Hot Pack provides heat therapy and cold therapy to reduce swelling and soothe discomfort from arthritis, sprains, strains and bruises. Say hello to soothing heat. The Cold n' Hot pack is the ideal solution for quick heat therapy. Relieve aching muscles, sore joints, stiff bones and more by simply heating the compress in the microwave. Then gently place on or over the limb or area to be treated. Also say hello to healing cold. Soothing cold relief to reduce swelling and ease pain is just a fridge or freezer away. Chill the Cold n' Hot and it's ready to go. The cold therapy pack contours the body, providing quick aid where it's needed most. Each pack measures 5 by 10 inches.