Western Mountaineering Antelope MF Sleeping Bag Made with extremely durable, breathable and water resistant MicroLite XP? fiber shell 850 down fill power gives this bag exceptional warmth to weight ratio 5 1/4" spacing of continuous baffles that stretch from zipper to zipper 62"/39" shoulder/foot girth gives you a little extra room to add layers if the temp drops Full down collar and full length draft tube prevent cold drafts from disturbing your slumber