For either hot or cold therapy. Ideal for treatment of minor injuries such as scrapes, bruises, sprains, strains and chronic aches and pains. Reusable hot/cold compresses which consist of one hot/cold gel pack and a universal wrap cover with a soft foam material that is hook compatible with a soft, absorbent terry cloth liner. Smaller size (4 x 15") is ideal for the neck, leg and ankle. Larger size (6 x 10") is ideal for the back, shoulders and thighs.