Built to tackle truly frigid conditions, the Marmot Datum Composite Mummy Sleeping Bag, rated to 0F, blends efficient synthetic insulation with the pure warmth of down. The body mapped marriage of components makes it a versatile option for getting out in cold weather while water resistant down endures in wet conditions. Body Mapped 650FP down wraps around body, head, foot and super efficient Spirafil synthetic insulation lines the bottom. Certified 650 fill power down with Down Defender improves water resistance in wet conditions. Outer shell is 30d 100% nylon ripstop DWR 1.5 oz.sq. yd. and 70D 100% polyester 2.2 oz.yd. Inner lining is 30d 100% nylon DWR 1.27oz.yd. Full length locking YKK two way zipper. EN Tested: Comfort: 10.0F 12.2C Lower Limit: 4.3F 20.2C Extreme: 43.8F 42.1C Body mapped Insulation yields maximum thermal efficiency without added weight. 3D hood construction. Internal stash pocket. Snagless insulated draft tube. Ground level side seams. Hood draw cord. Zipper garage. Stretch tricot baffles. Two hang loops. Compression stuff and storage sack included.
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