Provides essential comfort, packable: Packs down to fit in the included stuff sack, lightweight, Self-Inflating: Open cell foam core self-inflates; top off with just a few breaths for personalized firmness, easy to inflate and deflate, dimensions: 51 x 183 cm (20 x 72 in), weight: 680 g (1 lb 8 oz), thickness: 2 .5 cm (1 in), R-Value: 3.1