© G. Schaezlein
Western Mountaineering

Sleeping Bags

Bags by Temperature Rating 

Features & Construction 

Specification Chart 

Metric Specification Chart 

ExtremeLite Series

Microfiber Series

Alder MF

Sycamore MF

Caribou MF

Apache MF

Badger MF

Kodiak MF

Ponderosa MF

Antelope MF

Sequoia MF

Bristlecone MF

Lynx MF

Puma MF

Gore Windstopper Series

Gore Windstopper Expedition Series

Down Garments

Cloud 9 Comforter


Bristlecone MF
Bristlecone MF

See Explantion
  • 6" Spacing/Sideblock Baffle
  • 69"/48" Shoulder/Foot Girth
  • Full Down Collar
  • 8.5" Loft, -10° F
  • 42 oz. Down Fill
  • 3 lbs. 15 oz. Total Weight

No cold can turn you away when you're hunkered down in your Bristlecone. This bag is built big and warm and big! 69" of girth at the shoulder and 48" of girth at the foot. Crammed with 42 oz. of 850+ down yields an unrelenting 8 1/2" of simmering loft that keeps you heated to -10°. A large draft tube and the down filled collar make certain that winter remains outside. With 2 zippers it can be zipped to our mummy bags or unzipped to lie flat. In spite of its roomy proportions the Bristlecone weighs only 3 lbs. 15 oz.


Shape Size
Rating Loft
Inside Girth
shdr/hip/foot (in)
Fill Wt. Total Wt. Stuff size
Sac Size
Semi Rec 6'0" -10° F 8.5" 69"/61"/48" 42 oz 3 lb 15 oz 10 x 20 XL
(w/ full collar)  6'6" -10° F 8.5" 69"/61"/48" 45 oz 4 lb 3 oz 10 x 20 XL
Shape Size
Rating Loft (cm)
Inside Girth
shldr/hip/foot (cm)
Fill Wt. Total Wt. Stuff size
Sac Size
Semi Rec 180 -23°C 21.5 175/155/122 1190 g 1790 g 25 x 50 XL
(w/ full collar) 200 -23°C 21.5 175/155/122 1275 g 1900 g 25 x 50 XL

Home  |  About  |  News  |  Products  |  Product Tips and Care  |  Pricing  |  Find a Dealer  |  Dealers Only

Western Mountaineering; 1025 South 5th Street; San Jose, CA 95112
Top photo Lake eleanor with old Man Kibbie - early 1900s © G. Schaezlein
Background image © G. Schaezlein
Western Mountaineering