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Big Agnes Boot Jack -4 Down Sleeping Bag

Traditional down mummy bag that delivers high value and performance in a lightweight bag. Ideal for backpacking or camping adventures, but versatile enough for couch surfing and car camping.

They are insulated with Downtek™ and use baffle construction for efficient heat distribution. Rated to -4 deg Celsius

  • Traditionally insulated bags designed without the integrated pad sleeve found on Big Agnes System bags
  • Designed to decrease weight and size, while increasing thermal value using the traditional mummy shape
  • Contoured hood features a draw cord and cord lock for easy adjustment
  • 65”/165cm YKK #8 zipper
  • Interior fabric loops for sleeping bag liners
  • Mate together left and right zip bags
  • Mesh storage sack & Nylon stuff sack included
  • No-draft collar and No-draft zipper
  • Shell fabric is breathable with water repellent finish
  • Exterior loops for hang drying or storage
  • LEFT OR RIGHT ZIPPER? When you are in the bag, on your back, the right zip will be on your right side, left zip on your left side
  • Nylon rip-stop shell fabric 
  • Nylon taffeta lining
  • Baffle Construction
  • 600 fill DownTek™ water repellent down


      • Fill Weight 510 gr   
      • Bag Weight 1.179 gr   
      • Shoulder Girth 152.4 cm  
      •  Hip Girth 137.16 cm   Foot Girth 91.44 cm
      • Stuff Sack Size 20.32 cm x 44.45 cm   
      • Compressed Bag Size 19.05 cm x 21.59 cm


      • Fill Weight 538 gr   
      • Bag Weight 1.133 gr   
      • Shoulder Girth 157 cm 
      • Hip Girth 142 cm   
      • Foot Girth 96.52 cm
      • Stuff Sack Size M 20.32 cm x 44.45 cm   
      • Compressed Bag Size 20.32 cm x 21.59 cm