Big Agnes - Steamboat Springs, CO
Sleeping Bags / Traditional Mummy
DownTek™ Water Repellent Down

Crosho SL -20

Crosho SL -20 -20°


$599.95 - $619.95

850 DownTek™
You asked for an ultralight bag that could withstand the rigors of high alpine bivvies, be warm enough for the most extreme environments, and also pack efficiently and weigh next to nothing. Challenge met. Welcome back the re-designed Crosho UL -20 bag. Built with a superlight, high-tear strength shell, insulated with 850 fill power Downtek™, and body mapped, thermally efficient baffles, this bag has your back (and all other body parts) when conditions make that a necessity.
  • Traditional mummy shape allows for light weight and increased thermal value
  • Body mapped baffle construction optimizes themal efficiency
  • 3-D anti-snag draft tube prevents heat loss along the zipper
  • Vertically structured side walls integrating contoured baffles trap heat closer to the body
  • Contoured hood baffles cradle the head for a more comfortable fit
  • Oversized interior anti draft collar
  • Ergonomic foot box construction provides more loft and warmth
  • Superlight shell fabric with high tear strength
  • DownTek™ water repellent down repels water while maintaining insulating value
  • Low profile cordlock lets you un-cinch the hood with one hand
  • Minimal zipper cuts weight and reduces cold spots
  • 40”/102cm YKK #5 zipper
  • Zipper Garage
  • Interior fabric loops for sleeping bag liners
  • Steamlined exterior loops for hang drying or storage
  • Mesh storage sack & nylon stuff sack
  • Nylon rip-stop shell fabric with a water repellent finish
  • Nylon rip-stop lining
  • Insotect Flow™ construction
  regular/up to 6' long/up to 6'6"
Pad Size any any
Color blue blue
Fill Type 850 DownTek™ 850 DownTek™
Fill Weight 35oz 37oz
Bag Weight 3lb 3lb 4oz
Shoulder Girth 60" 62"
Hip Girth 54" 56"
Foot Girth 36" 38"
Stuff Sack Size L-9"x20" L-9"x20"
Bag Size
8"x9" 8"x10"

Crosho Lake was and accidental discovery in 1882. The lake was discovered when a pair of early pioneers were looking for their lost horses while they were hunting for elk. When they became separated, one of the gentlemen reported finding a large herd of elk, while the other reported finding Crosho Lake. The horses gave them the slip permanently. Today, the area is popular for fishing and hiking on nearby trails. The Crosho Lake Recreation Area is located a few miles northwest of Yampa at the base of the Little Flat Tops. Hold your horses- literally, the area proves tempting for equines to go rouge.

DownTek Traditional Mummy Bags

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.

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