Mountain Hardwear Ultralamina 0 Sleeping Bag - Past Season The effectiveness and durability isn't compromised even after frequent washings and compression from continued storage. Internal zippered pockets hold personal items like watches, MP3 players and flashlights. Contour designed footbox keeps feet comfortable and warm. Dual size zippers used to adjust ventilation. Convenient transport using the accompanying stuff sack, and safe long- or short-term storage with the protective nylon mesh storage sack.