Super comfortable, infinitely warmer and more compact than any other comparable mat of similar weight. Since down compresses so well, Downmats also pack very small. Unique pump-packsack doubles as both bellows-pump, pillow and stuffsack. Dimensions - 7cm thick, 120cm long 52cm wide. Packed dimensions - 18cm x 15cm. R-value (insulation) - 5.9 Weight - 680g (includes sack)