>>2459211Do yourself a massive favor and order a thick inflatable anyway, the thicker the better. You'll use it. If it still sucks then take the hammock pill. Hammocks are something you can cheap out on, they're literally just fabric and rope. Plenty of good $30 ones on Amazon, get one with an integrated bugnet. Then a $10 8x10' tarp and 100' of paracord. You'll definitely get $30 worth of fun out of a hammock, they're great. But just a foam mat is gonna suck no matter what. Poor sleep ruins everything.
>>2459224R value is just a measure of insulation, pic related.