This long lasting cold pack has an innovative and reusable gel that freezes fast and lasts for hours outside the freezer. Its "ice cooling cells" keep it extra cold, while surrounding gel makes it flexible and super comfortable. Superior breakthrough technology stays flexible and soft while frozen and molds to the body for maximum pain relief. The dual sided sleeve with hook and loop closures helps keep pack in place to deliver optimal results. Excellent for soothing pain and reducing swelling from sports or other injuries, carpal tunnel, or arthritis flare-ups.