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Spike Lake 15 Downtek


Product Description

Product Description

600 DownTek™

Our traditional down mummy bags deliver high value and performance in a lightweight bag. Ideal for backpacking but versatile enough for couch surfing, they are insulated with Downtek™ and use baffle construction for efficient heat distribution.

If you’re in the market for a mummy shaped bag constructed with high quality, lightweight materials, these bags are your ticket to travelling fast and light.

  • Contoured hood features a draw cord and cord lock for easy adjustment

Features & Specs


  • 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 - regular and long bags
  • Interior fabric loops for sleeping bag liners
  • 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
  • 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


  • regular/up to 6' 
  • Left Hand Zipper
    Color Flint/Navy 
  • Fill Type 600 DownTek™ 
  • Fill Weight 21.5oz
  • Bag Weight 2lb 10oz 
  • Shoulder Girth 60" 
  • Hip Girth 54" 
  • Foot Girth 36" 
  • Stuff Sack Size M 8"x 17.5" M 
  • Compressed Bag Size 8.5"x8.5" 
  • Nylon rip-stop shell fabric
  • Nylon taffeta lining
  • Baffle Construction
  • 600 fill DownTek™ water repellent down
  • DownTek™ Water Repellent Down

Big Agnes names...


Spike Lake sits on the east side of the Zirkels between Lost Ranger Peak and Mount Ethel at 10,433 feet.

As high alpine lakes go this one sits high, blue, and full of trout.

Neighboring lakes such as Rainbow, Roxy Ann, Slide, and Luna may be better known and easier to access which is why Spike Lake is legendary for being so full of trout that backpackers have been known to spend days on its banks eating nothing but scores of fish caught out of its fresh, clean water.