Very light for a full size backpacking comfort pad. I like the fold-ability. Packs very compact for backpacking. About 40% lighter than my old Thermarest. The Campsaver deal on the irregular model makes this a better choice. Tough to say that the 3.8 R rating is better than the old models, as my hips always get cold, but the weight and compactness make this my first choice.
This review was written in the old system and had content requirements that are different than reviews written today.