The Big Agnes Sidewinder 20 Down Sleeping Bag is a side sleeper's dream in the backcountry. Turn cold nights into cozy comfort and incredible sleep when snuggled into the warmth of DownTek water repellent down and FireLine Eco 100% recycled insulation. The combination creates a lightweight and lofty sleeping bag that resists moisture in wet environments. Side sleeper technology makes it easy for side sleepers to get a good night's sleep, as well as roll from side to side with ease. The Pillow Barn keeps your pillow in place, and the adjustable hood brings in the warmth.