Use with these ice packs or any compatible heat pack. The sleeve should be used whenever hot and cold packs are being applied. It will stop ice packs from burning the skin and prevent overheating when using heat packs. The sleeve works with instant and reusable products of all kinds. Each sleeve is elasticated which ensures it is fully secure when being worn, preventing slipping. The fabric design can be washed to keep it clean. The sleeve is designed for use on arm injuries and will also stretch to support lower leg sprains and strains. Keep in the physio kit bag or along with first aid supplies.