“What is the 'R' value of this pad. I know this question was asked before, but it got an answer sayings its R-Value is 4, which seems very unrealistic for a pad so thin and so light. The Neo-Air X-therm has an R-value of 5.7, is 23 oz, is thicker, and is insulated with air and down and synthetic insulation to give a reference point and is one of the higher quality pads on the market to give a reference point.”
This is a great pad. I've given 2 away to guides in Bhutan and Alaska. I use it in tandem with a light weight "Therma rest" and it is the lightest weight, most comfortable night's sleep one can ask for while backpacking. R factor..I think 4 is very fair. Arbitrary, but insulates well from the cold ground, even at 14,000+.