Frankly, I did not believe the claims made for this product. But I am teaching grandkids fire making so I gambled. There was no gamble: these things are unreal. I put them through every test I could imagine and they burn as advertised. Starting fires for camping, survival or just practice is far too easy now, it nearly takes the fun out of it; nearly. Buying five packs is the best way to go because using them is fun and you WILL want to have these in every four-wheeler, side by side, truck, jeep...