The patented design of the Chattanooga ColPac – Black – Oversize gently delivers soothing cold therapy and stays pliable during treatment to deliver up to 30 minutes of relief from acute pain, swelling and fever. Simply remove from the freezer and apply immediately after an injury to control the inflammation of soft tissue and decrease discomfort. Made with durable polyurethane material, the oversized Chattanooga ColPac – Black Polyurethane is filled with silica gel, making it safe for use by all ages. Created to contour to the application area for full-contact cold therapy penetration, the oversized Chattanooga ColPac – Black Polyurethane was designed to be used with a protective layer between the ColPac and the skin, to avoid irritation. To preserve and maximize the life of your Chattanooga ColPac – Black – Oversize always keep it moist; to prevent it from becoming hard, seal it in a plastic bag and store it in the freezer when it is not in use. Invented for heavy clinical use to help provide pain relief for acute injuries and chronic aches, the durable Chattanooga ColPac – Black – Oversize is reusable, for years of convenient, healing cold therapy relief. Note: The Chattanooga ColPac – Black – Oversize is only for cold therapy; do not heat. Do not sit, lie or sleep on the ColPac. Never chill the ColPac below 0° F.