Snow Goose EX -40 Sleeping Bag
Snow Goose EX -40 Sleeping Bag

Snow Goose EX -40 Sleeping Bag

Regular price Sale price$1,069.00
22 Reviews


Due to high demand, Feathered Friends sleeping bags may take 5 to 9 days to complete. Please view our Shipping information here.

Once we receive your order, we will finish hand-crafting your sleeping bag right here in Seattle!

If you have an urgent deadline, do not hesitate to contact us.

Please check our Shipping Info page for current shipping times. Thanks!

The Snow Goose is the world’s premier high altitude expedition sleeping bag. This model shares many design elements with the warmer Snowy Owl but delivers superb warmth at a lighter weight. We eliminated the second (inside) zipper and scaled back the hood and shoulder regions, but retained the efficient contoured shape that keeps full loft of the 900+ fill down around the head for maximum warmth.

EX: Winter & Expedition. Pertex® Shield® fabric. 15 denier with 40 denier rip-stop reinforcement. Water-resistant/ breathable coating.

Ideal for: High-Altitude Expeditions, Frigid Winter Camping, Polar Trips


  • Expedition Mummy shape with #5 YKK two-way zipper with locking sliders
  • Pertex Shield EX water-resistant/breathable shell with DWR
  • Pertex 30 denier taffeta lining
  • Permanent collar with EX facing to prevent breath condensation from entering the bag
  • Side-block baffles maintain a 60:40 top to bottom insulation distribution
  • 3D contoured hood wraps a layer of down around your head
  • Generous draft tube prevents cold air from seeping past the zipper
  • Large side walls ensure even insulation all around
  • Overlapping dual-webbing zip guard guides the fabric away from the zipper
  • Tuck-stitch construction hides the baffle threads and prevents moisture from wicking through to the inside
  • Includes storage bag & stuff sack


Mummy Sleeping Bags

The Feathered Friends Snow Goose features our most voluminous mummy shape, accommodating warm down garment layers in the most extreme environments.

Regular Length
Fits up to 6' 0" | 183 cm

Long Length
Fits up to 6' 6" | 198 cm

Have questions on sizing? Feel free to Contact Us - We're happy to help!

Additional Info

Ideal Sleeper Height Reg 6' 0" / 183 cm 
Long 6' 6" / 198 cm
Dimensions 64" shoulder / 60" hip / 39" footbox
Zipper Left Side, YKK #5
Shell Pertex® Shield EX (waterproof, breathable)
Lining Pertex® 30 denier nylon taffeta
Fill Power 900+ Goose Down
Origin Made in Seattle, USA of imported materials
Temp Rating -40ºF / -40ºC
Fill Weight Reg 2 lb 10 oz / 1211 g 
Long 2 lb 13 oz / 1276 g
Average Weight Reg 4 lb 2.9 oz / 1896 g 
Long 4 lb 7.1 oz / 2015 g
Packed Size 35L


Customer Reviews
5.0 Based on 22 Reviews
5 ★
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Filter Reviews:
Alexander A.
United States United States

Great for Wyoming

I am 5'10" ~260lbs. Wide shoulders and hips. Side sleeper. Sleeping bag is very high quality. Zipper is excellent and is anti-snag. For my body type, I would like a slightly wider shoulder area, but I understand compromises have to be made for weight and volume. When I put my sleeping pad inside the bag, I was flipping the bag while tossing and turning. Took the sleeping pad out, and I could turn inside the bag without flipping it. If you are a smaller person, this bag will be very spacious. A light build person could fit their body, pad, and gear in here. A larger build will fit their body and some gear. I got sick while camping. I zipped this up at night when it was +40 degrees at night and I killed my covid fever in 2 nights. On night 3, I was sweating in this and opened up the zipper so I could cool off. My critique is I would like some cloth loops on the bag to tie it down to a pad. I can't fit my bag in here so I would like the ability to not fall off the pad when I toss and turn. If you are taking this into a backcountry situation, use a 35L compression sack. It compresses this bag in half. I got mine down to around 20ish liters with compression. It fits easily in my Stone Glacier 7000 backpack. It will come with me elk hunting this year. After taking it camping, I learned this bag is overkill for most situations. But I wanted to buy one bag, one time, to handle ANYTHING Wyoming can throw at me. It can get below -20F in the winter here easily and last year it was -40F. When I am not camping, this goes in the truck in case I am stranded in a winter storm. I may be poorer owning this bag, but I will never experience being cold ever again.

  • How would you rate the quality? Not greatExcellent
  • How is the warmth? Not WarmExtremely Warm
  • How is the fit of the sleeping bag? Runs SnugVery Roomy
United States United States

Denali Crash Pad

Bought this sleeping bag for a Denali expedition. Looking forward to getting it out for several test runs before the big climb. It is well constructed and Feathered Friends h ad great customerservice!

Canada Canada

Snow goose EX -40 bag

Only took one week to ship to Canada Excellent customer service Its Mid November so far and has only been -27 C but the bag is toasty warm would not know it's that cold outside when I'm in the bag Definitely Recommended Thank You Feathered Friends

  • How would you rate the quality? Not greatExcellent
  • How is the warmth? Not WarmExtremely Warm
  • How is the fit of the sleeping bag? Runs SnugVery Roomy
Anthony C.
United States United States

Goose EX 40

I have not used it yet but it’s way to heavy for a backpacking trip. I’m sure it will keep me warm and I’ll keep it but it’s way to big for BP trips.

  • How is the fit of the sleeping bag? Runs SnugVery Roomy
  • How is the warmth? Not WarmExtremely Warm
  • How would you rate the quality? Not greatExcellent
Marc M.
Canada Canada

I'm not afraid to face the cold

I'm wating the cold winter temperature . I'm sure my feedback will be positive.