Patent-pending glove provides hot or cold therapy to help ease hand pain from acute injury, arthritis, fibromyalgia, myofascial, soft tissue soreness, stiff joints and more. Simply cool glove in the freezer for cold therapy or heat glove in the microwave for warm therapy. Designed by an Orthopedic surgeon, the glove also provides mild compression to help reduce swelling. Cotton and polyester. Measure the width of your hand at the knuckle and Choose: S(up to 3 1/8"), M(up to 3 1/2") or L(up to 4").