Hot Cold Ice Gel Pack Pouch ideal for Pain Relieving hot & cold Therapy for Knee, Arm, Elbow, Shoulder, Back for Aches, Swelling, Bruises, Sprains, Inflammation. Pain relief for Arthritis, Muscle Therapy, Soothe swelling, Soothe Headaches, Treat Injuries, Improve Blood Circulation. Use it with the cover provided or any towel, Microwave to Heat, or Soak Pack in Boiling Water for 5 Minutes. An ice pack for injuries that are made of durable, soft-touch material. Our hot and cold packs for therapy are gentle on the skin and are also microwavable heating pads.