If you are looking for a replacement for a heat resistant cotton hand warmer this material works great and is the cheapest option I have found. For my "pocket" hand warmer, 12" x 12" material is enough to fix at least 4-5 of these, maybe more. up". Tried without tearing and such. They consume less material, and I think that filling the fuel tank more evenly leads to more stable heating. If you do it right, you can remove 4-5 layers or more, as a result what you end up with is a piece of black cotton material then stick this piece by piece into the small hole after first removing the cotton you are replacing it works really great and gets rid of the burnt cotton that I keep tearing off would have to .It's all on YouTube.
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