Mountain Hardwear Women's Laminina Z Flame 21 Regular Sleeping Bag Nylon Ergonomic draft collar blocks the escape of heated air from inside the bag Full length #5 zipper with double sliders for versatile ventilation Comfort footbox follows natural foot position for maximum warmth and comfort Face gasket and tailored hood comfortably block drafts at the hood opening and seal in warmth Durable, lightweight nylon shell with DWR treatment repels water