The Squid Knee Wrap and Gel Pack includes both the compression wrap and gel pack for the knee. The Squid Knee Wrap is ergonomically designed to fit around the knee. It increases circulation and tissue oxygenation by directing swelling away from the injury and towards heart. The wrap has a 5 inch to 18 inch circumference and is made of a durable, anti-bacterial material that is easy to clean. The Squid Knee Gel Pack is a soft gel pack that provides maximum cold and comfort without the mess of ice water. The proprietary gel formula makes it freeze colder than water. This gel pack conforms to the knee while inside the wrap. Pump sold separately with the full unit.