The 7.5cm thickness gives the mat an R-rating of 6.6, making it suitable for temperatures as low as -29oC. The innovative wave-shaped foam helps the mat deliver high-performance insulation while remaining lightweight and compact when packed.Two-person self-inflating sleeping mat Flat High-Flow valve - easy inflation and rapid deflationWave-shaped foam for comfort and volume reductionHorizontal air channels reduce weight and pack sizeCarrybag includedPFC free construction Dimensions: 195 x130 x 7.5 cm (LxWxH)Packed dimensions: 78 x 21 cmR-Value: 6.6 (-29oC)Weight: 4.3kgTop Material: 190T 75D 100%, polyester peachBottom Material: 190T 75D, 100% polyester