Sierra Designs Mobile Mummy 800 2-Season Sleeping Bag - Women's Ultralight jacket hood with no cords or toggles-it moves with you while fitting snug around your face like the hood on a jacket. Zipperless armports-no zippers or closers, ready for instant use Garment-style shoulder design-when youre upright in the bag, our tapered design rests on your shoulders-not your head. Centrally placed, ventable zipper on dual sliders can be zipped from bottom for venting. Sleeping bag comfort rating: 31 F, Limit 20 F,