Thermarest Trail Lite Womens Sleeping mat

Excellent combination of comfort, compactness and essential warmth. / Versatile: Lightweight and compact enough for backpacking, with enough comfort for most adventures. Lightweight, die-cut foam: keeps you warm and squeezes to save space. / Easy to use: self-inflating foam core rolls up small for easy packing. SPECIALLY FOR WOMEN: More warmth for anyone who freezes easily while sleeping. New WingLock(TM) valve: our intuitive and reliable valve provides maximum airflow for easier inflation and faster deflation. The movable valve blades prevent unwanted leakage of the air and thus save breath and effort. Dimensions: Womans Regular WR: 51 x 168 cm, 3.8 cm high, 710 g / R: 51 x 183 cm, 3.8 cm high, 740 grams/L: 64 x 196 cm, 3.8 cm high, 1050 grams, with stuff bag. R value (according to ASTM) for L and R size: 3.2, R value for WR: 4.5 - What is the R value? The R value indicates how well a sleeping mat insulates. The higher the R value, the warmer the mat feels.