With all the synthetic materials that are everywhere in the camping world (unless you purposefully avoid them), I recommend being VERY AWARE that flame and these materials are a dangerous combination. Tents, sleeping bags, 'fleece' materials, jackets, underwear, etc., the list goes on.....
Some of the very thin tent materials have almost a 'flash' to them with a flame ignition.
Even worse, this melts and drips onto the skin (tent above) and solidifies and makes a very deep burn on that spot. This from just one drip. Most things burning will be many, many drips! Also they have found out that flammable vapors (gasoline, alc, etc.) go into the material and then if they get ignited the whole t-shirt (or whatever) will melt to the individual wearing it. Very large deep burns result.
There is a start of a swing back to natural fibers that will 'burn', but at least it doesn't MELT onto you. HUGE difference in the burn depth on the skin. Always wear a couple of natural fiber layers against the skin before putting on the polar fleece and other synthetic layers, especially if you have any possibility of being around flammable vapors (filling up the car?)

As a former fireman, Candles cause a LOT of unintentional fires in homes. Now we take them camping with us?

Use with GREAT caution,
gimpy

Oh, and spread the word to those you care about!