Big Agnes Hitchens UL 20° 850 DownTek Sleeping Bag

Big Agnes

1 item left


These technical ultralight bags are designed for adventures where every ounce counts, each nook and cranny in your pack is accounted for, and you depend on the performance of your sleeping bag like you would a harness, helmet, or beacon.

Specs + Sizing

Stuff Sack Size Small: 7.5in x 15in / 19 x 38c/ Reg: 7.5in x 15in / 19 x 38cm / Long: 7.5in x 15in/ 19 x 38cm
Fill Weight Small: 16oz / 454g / Reg: 18oz / 510g / Long: 20oz / 567g
Compressed Bag Size Small: 6in x 6in / 15 x 15cm / Reg: 6in x 7in / 15 x 18cm / Long: 6in x 7in / 15 x 18cm
Bag Weight Small: 1lb 9oz / 709g / Reg: 1lb 11oz / 765g / Long: 1lb 15oz / 879g



  • Traditional mummy shape allows for light weight and increased thermal value
  • Body mapped baffle construction optimizes thermal efficiency
  • 3-D anti-snag draft tube prevents heat loss along the zipper
  • Vertically structured side walls integrating contoured baffles trap heat closer to the body
  • Contoured hood baffles cradle the head for a more comfortable fit
  • Oversized interior anti draft collar
  • Ergonomic foot box construction provides more loft and warmth
  • Ultralight high tenacity shell fabric
  • DownTek™ water repellent down repels water while maintaining insulating value
  • Low profile cordlock lets you un-cinch the hood with one hand
  • Minimal zipper cuts weight and reduces cold spots
  • 40"/102cm YKK #5 zipper
  • Zipper Garage
  • Interior fabric loops for sleeping bag liners
  • Streamlined exterior loops for hang drying or storage
  • Mesh storage sack & nylon stuff sack

Construction + Materials

  • Nylon rip-stop shell fabric with a water repellent finish 
  • Nylon rip-stop lining
  • Insotect Flow™ construction