A Therapy Pack is a natural form of pain relief that uses temperature to provide comfort. They can be used hot or cold depending on the individuals preference. Therapy Pack: Medium (5"x9") A great size for: Kids of all ages Helping kids wind down at bedtime Headaches Discretionary size for cramps (fits in a hoodie pocket!) Use as an ice pack This size also helps add some comforting pressure to the forehead if you struggle with falling asleep. Filled Canadian Wheat. *This size includes a matching removable & washable cover.