Some one mentioned a tea light candle holder well worth the weight and space, open flame where you can't see it and control it not a very good idea. You can get away with it only so many times. There are heavier space blankets that can be used over and over again and still are very light weight.
You can control it just fine. There are always times when a heavier space blanket has its purpose, but this setup is primarily about LIGHTNESS and minimum pack volume so that it can fit in my pocket when I am running in the mountains in lycra and a windshirt.
I do not expect to have to use it. But my goodness, when you need it, its only there if it fits in your pocket.
