Yep. That stuff is amazing. My neighbor and I started using a small piece for butt warmers a few years ago and we've been playing with it ever since. My tent floor is 40"x80" and rolls up to a 5" diameter x 20" long roll. I still carry a piece for sitting on too. It's about 16"x40" and I fold it into a 8"x10" square about 3/4" thick. I even keep a piece in my car to sit on this time of year.

The next few days will be a good opportunity to test the tent heaters. We've got rain, sleet, freezing rain, and snow in the forecast with Friday's high expected to be around 25º and a low the next morning around 7º.