The Emerald Instant Cold Pack, is the disposable Ice Pack to have with you in your First Aid kit. Provides relief and swelling caused by sprains, strains, contusions, minor burns, toothaches, and insect bites. No refrigeration or freezing required, the cold pack is activated and instantly cold on the spot. Has been tested to last below 40 degrees for approximately 12 minutes. The Cold Packs are disposable and should only be used once. Never refrigerate or freeze the pack, as it can lead to frostbite.Activation Instructions:1. Shake contents to bottom of bag.2. Feel and locate inner pouch. Squeeze firmly to rupture inner fluid pouch.3. Shake briefly to mix contents.4. Wrap in soft cloth to protect skin, then apply.Comes as a pack of 24 Cold Compress PacksSize: Small - 4 inches x 5 inches