© 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


Alder MF
Alder MF

See Explantion
  • 5 1/4" Spacing/Continuous Baffles
  • 5" Loft, 25° F
  • 62"/ 4 6" Shoulder /Foot Girth
  • 16 oz. Down Fill
  • Zips to Summer Coupler
  • 1 lb. 15 oz. Total Weight

For those mild nights when counting shooting stars is all you have to do, then the semi-rectangular Alder MF is your bag of choice! Roomy enough for comfort and warm enough so you won't wake with a chill before dawn. This bag has a 62" shoulder girth and 46" at the foot. The Alder MF has a zipper along the side so that it can mate with mummy bags and a zipper around the foot so that it can be opened flat as a comforter or zipped to our Summer Coupler to be a sleep for two. This bag was formerly known as the "Aspen MF". Nothing about the bag has changed except the name.

Shape Size
Rating Loft
Inside Girth
shdr/hip/foot (in)
Fill Wt. Total Wt. Stuff size
Sac Size
Semi Rec 6'0" 25° F 5" 62"/59"/46" 16 oz 1 lb 15 oz 7 x 13 XS
  6'6" 25° F 5" 62"/59"/46" 18 oz 2 lb 1 oz 7 x 13 XS
Shape Size
Rating Loft (cm) Inside Girth
Fill Wt. Total Wt. Stuff size (cm) Sac Size
Semi Rec 180 -4°C 12.5 157/150/117 455 g 880 g 18 x 33 XS
  200 -4°C 12.5 157/150/117 510 g 935 g 18 x 33 XS

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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