hera degree pearl to go! portable pain relief! once you discover thera degree pearl's healing power you'll want to take it everywhere - and you can! the oval-shaped sports pack with its adjustable strap lets you work orfortably. Use it at the gym, the office, your in-laws'. Anytime, anywhere you need icy-cold or deep-heating therapy. It's perfect for sore knees and ankles, wrists and hands, shoulders and chest. The revolutionary pearl technology absorbs heat and cold while the soft, pliable pack stays clean and dry against your skin. It's hypoallergenic, non-toxic and reusable. Chill it in the fridge or freezer for analgesic cold, or pop it in the microwave for penetrating heat. The pack holds its therapeutic temperature for a full 20 minutes. When you're on the go, pain relief can go with you.