When staying warm is as important as keeping your pack light, the ProLite Plus mattress is an excellent solution. Patent pending diagonal cut foams reduce convective heat loss, making it the ideal choice for ski touring, cold weather expeditions and winter camping. This female specific model provides added warmth for cold sleepers. It's substantial enough to keep you comfortable while mountaineering or ski touring, yet rolls up small and light enough that you'll have no problem taking it as far as you want to go. Stuff sack included. Features a Lightweight: New tapered shape reduces weight by nearly 10%. a Efficient Warmth: Unique, diagonal cut foam provides efficient insulation. a Compact: Tapered design and high performance foams eliminate excess bulk and roll up to a compact packed size. a Added Warmth: Extra insulation in the torso and foot provide warmth where it's needed most.