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.b
Temp Rating Celsius:
Regular: 21.5 oz. Long: 22.5 oz.
Green / Grey
600 fill DownTek water-repellent down
Regular: 2 lbs 6 oz Long: 2 lbs 8 oz
Regular: 6 ft 0 in. Long: 6 ft 6 in.
• 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
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.
Bag Shell Material:
Nylon rip-stop shell fabric with a water repellent finish
Bag Lining Material:
Nylon taffeta lining
Bag Stuff Size:
8 x 17.5 in
• 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
• 65in./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