The Marmot Electrum 30 Mummy Sleeping Bag is the result of extensive lab and field testing, to optimize the body mapping of different types of insulations to perfectly balance thermal efficiency, weight and comfort. The ground layer of synthetic insulation provides maximum warmth in compression zones, while the top layer of down insulation provides warmth and comfort. Marmot Composite Construction combines 650 fill power down and thermally efficient SpiraFil synthetic insulation. Body mapped insulation yields maximum thermal efficiency without added weight. Certified 650 fill power down insulation. Down Defender treatment to improved water resistance in wet conditions. EN tested. Full length zipper with zipper guards. Snagless insulated draft tube. Velcro free face muff. Two hang loops. Shell is 30d 100% nylon ripstop 1.3 oz. and 70d 100% polyester 2.2 oz. Lining is 30d 100% nylon 1.3 oz. Stuff sack and storage sack included. EN13537 Tested: EN Comfort: 36.8 DegreeF2.7 DegreeC EN Lower Limit: 27.14 DegreeF 2.7 DegreeC EN Extreme: 13 DegreeF 25 DegreeC
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