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Big Agnes Spike Lake 15 Down Sleeping Bag

MSRP: $239.95
Was: $239.95
Now: $189.56
(You save $50.39 )
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Designed for backpacking but equally at home car camping, the Big Agnes Spike Lake 15 down mummy bag features a traditional sleeveless design, baffle construction for efficient heat distribution, and Downtek water resistant down insulation to keep you toasty warm during the shoulder seasons. If you’re in the market for a mummy shaped bag constructed with high quality, lightweight materials, these bags are your ticket to traveling fast and light.


  • Traditionally insulated bags designed without the integrated pad sleeve found on Big Agnes System bags
  • Contoured hood follows the shape of your head for a more comfortable fit
  • Oversized interior anti-draft collar
  • Low profile cordlock lets you un-cinch the hood with one hand
  • Two way anti-snag zipper for a smooth, quick zip
  • Zipper Garage 
  • Liner loops
  • Mate together left and right zip bags
  • Mesh storage sack & nylon stuff sack
  • No-draft collar and No-draft zipper
  • Shell fabric is breathable with water repellent finish
  • Exterior loops for hang drying or storage

Construction + Materials

  • Nylon rip-stop shell fabric with a water repellent finish
  • Nylon taffeta lining
  • Baffled construction
  • 600 fill DownTek™ water repellent down 


  • Capacity: 1P
  • Temp Rating: 15° F
  • Seasons: 3
  • Bag Size: Regular or Long
  • Fits Up To: Regular - 6' 0"; Long - 6' 6"
  • Pad Size: Any
  • Bag Weight: Regular - 2 lb 6 oz; Long - 2 lb 8 oz
  • Insulation: 600 Fill DownTek 
  • Compressed Size: Regular - 8" x 8"; Long - 8" x 9"
  • Stuff Sack Size: 8" x 17.5"