Dual Comfort CorPaks™ help to relieve headaches, ease pain and reduce inflammation. Adjustable strap provides compression and secures the pack to the injured area, keeping your hands free for daily activities. The pack's two exterior surfaces offer controlled therapy, with the soft, light blue surface providing quick release and the plush, dark blue surface providing slow release. Accommodating both hot and cold therapy, the non-toxic, completely natural fill allows the pack to remain pliable, comfortably contouring to your pain points. Use cold to reduce inflammation, hot to relax muscles and promote healing. Soft, frost-free design is gentle on skin—no wrap needed. Each pack, when properly prepared, maintains its therapeutic temperature for up to 20 minutes. Keep one ready for use, stored in your freezer, or quickly heat one up in your microwave. Latex-free.