With a full 3.8 cm/1.5" of foam, FlexMat Plus is the thickest, most-comfortable closed-cell mat available. It is highly versatile for stand-alone use and will increase warmth and puncture protection for inflatable mats. The rapidly-deployed folding form makes setting up and striking camp a breeze. SpecificationsSize XS Temperature: 2 AdegC R-Value (ASTM F3340-18): 2.2 Thickness: 3.8 cm Length: 120 cm Shoulder Width: 52 cm Weight: 315 g Packed height: 52 cm Packed diameter: 15 cm Pack volume: 10 l size M Temperature: 35.6 AdegF R-Value (ASTM F3340-18): 2.2 Thickness: 1.5 in Length: 72 in Shoulder Width: 20.5 in Weight: 16.9 oz Packed height: 20.5 in Packed diameter: 7.1 in Pack volume: 14 l