Here's what other sites are saying:
Warm and lightweight, the Big Agnes Crosho UL -20 sleeping bag provides reliable warmth for colder missions where weight and comfort are at a premium.
Big Agnes Camp & Hike Crosho UL 20 850 Downtek Small Left Blue BTMCULSL18. Technical ultralight traditional mummy bags designed to excel in all conditions Features/Specifications: Features:Traditional mummy shape allows for light weight and increased thermal valueBody mapped baffle construction optimizes thermal efficiency3-d anti-snag draft tube prevents heat loss along the zipper Vertically structured sidewalls integrating contoured baffles trap heat closer to the bodyContoured hood baffles cradle the head for a more comfortable fitOversized interior anti draft collar Ergonomic foot box construction provides more loft and warmthUltralight high tenacity shell fabric (Flume UL Hitchens UL)Superlight shell fabric with high tear strength (Crosho UL)Downtek water repellent down repels water while maintaining insulating valueLow profile cordlock lets you un-cinch the hood with one hand40in/102cm YKK 5 zipperMinimal zipper cuts weight and reduces cold spotsTwo way zipper allows easy access at waist for climbing harness tie-inZipper garage Interior fabric loops for sleeping bag linersStreamlined exterior loops for hang drying or storageMesh storage sack nylon stuff sackMaterials construction:Nylon rip-stop shell fabric with a water repellent finishNylon rip-stop liningInsotect Flow construction850 fill Downtek water repellent down
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