Doc Merrick's Cool Wrap is much more than just an ace bandage. It is made from a proprietary cloth that is innovative and GREEN (chemical free). To activate the cooling process simply soak in water, wring it and snap it, and than apply to injured area. For even colder results once activated, put into freezer for 5-8 minutes and apply immediately, or keep in the refrigerator until ready for use. Motion and movement help activate the cooling process as well. Doc Merrick’ s Cool Wrap provides effective therapy for sporting and medical management of acute joint and muscle pain stemming from injury, work or arthritis. This product is highly endorsed by Dr. John Merrick MA PT DC of New Hampshire. 3.25" x 60"