Cryopak 4 Large Multi Purpose Reusable 12x17 Non Toxic Ice Blanket Freeze Pack for Coolers Boating Fishing Camping Keep Food Fresh Maintains cold temperature for 24 hours in an insulated container, and can be cut to size thanks to its unique seam technology Non-toxic liquid makes blanket ideal for coolers, first aid kits, and even lunch boxes; ideal to help relieve muscle pain and swelling Patented design allows blanket to be flexible when frozen, so you can wrap it around various shapes and sizes With facilities in Vancouver and Montreal, Cryopak has been a leading provider of temperature controlling products since 2000