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Big Agnes - Spike Lake 15

The Big Agnes Spike Lake 15 is a traditional mummy-style down bag constructed with heat-trapping Insotect Flow baffles. Ideal for backpacking but versatile enough for couch surfing, the Spike Lake is insulated with water-repellent Downtek™ and uses baffle construction for efficient heat distribution. If you’re in the market for a mummy bag constructed with high-quality, lightweight materials, this bag is your ticket to travelling fast and light.

What's in a Name?
Spike Lake sits on the east side of Colorado's Zirkel mountains between Lost Ranger Peak and Mount Ethel at 10,433 feet. As alpine lakes go, this one sits high, blue, and full of trout. Neighboring lakes are 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.

Technical specifications & features

Weight Regular: 2 lbs 10 oz
Long: 2 lbs 12 oz
Gender Men's & Unisex
Temp Rating º F 15° F
Temp Rating º C -9° C
Bag Style Mummy
Seasonal Usage Three Season
Insulation 600 fill DownTek™ water-repellent down
Fill Weight Regular: 21.5 oz.
Long: 22.5 oz.
Bag Shell Material Nylon ripstop
Bag Lining Material Nylon taffeta
Bag Length Regular: 6 ft 0 in.
Long: 6 ft 6 in.
Bag Stuff Size 8 x 17.5 in
Circumference at Chest Regular: 60 in.
Long: 62 in.
Circumference at Hips Regular: 54 in.
Long: 56 in.
Circumference at Foot Regular: 36 in.
Long: 38 in.
Other Features • Traditionally insulated bag 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
• Baffle Construction • 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

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