Contains four 37ml fire packets. Burns hot up to 1358 degrees and at -23 degrees. Burns at elevation of 10,000ft and up. Does not evaporate, freeze or melt. Non-toxic. Water-soluble. Byproducts are carbon dioxide, water and sand. Smokeless and odorless. Non-explosive. Boils water easily. Tested and approved by U.S. Military. No EPA restrictions. Hang packaged.