Eider EX -10 Sleeping Bag

The Eider is the roomier version of the Widgeon, which was originally designed for the successful American K2 expedition in 1990. The Eider is the go-to bag for cold weather activities from mountaineering to snow camping, or for those who plan to wear down layers while sleeping to push the comfort rating of the bag. The Eider is 2-4 inches larger in circumference than the Widgeon, and is the winter equivalent of the best-selling Swift.

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

Availability: Select color & length for availability

Availability Information

From: $729.00

* Required Fields


  • Mummy shape (standard width) with #5 YKK two-way zipper with locking sliders
  • Pertex Shield EX water-resistant/breathable laminate shell with DWR
  • Pertex 30 denier taffeta lining
  • Permanent collar with EX facing to prevent breath condensation from entering the bag
  • Continuous baffles let you position the down where you need it
  • 3D contoured hood wraps a layer of insulation around your head
  • Generous draft tube prevents cold air from seeping past 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

Feathered Friends wide mummy sleeping bags have more space throughout, especially in the shoulders. This is perfect for those with broader builds, or those preferring to stash a lot of gear inside the bag.

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

Length Reg 6' 0" / 183 cm | Long 6' 6" / 198 cm
Dimensions 64" / 58" / 40"
Fill Power 900+ Goose Down
Fill Weight Reg 32 oz / 908 g
Long 33.8 oz / 960 g
Lining Fabric Pertex® 30 denier nylon taffeta
Country of Origin Made in Seattle, USA of imported materials
Packed Size 23L
Average Weight Reg 3 lb 7 oz / 1,553 g
Long 3 lb 10 oz / 1,653 g
Sleeping Bag Shell Fabric Pertex® Shield EX waterproof/breathable
Temperature Rating -10ºF / -23.3ºC
Zip Side Left

Customer Reviews (2)

Absolutely Incredible Sleeping Bag!!!Review by KevinReddy
I purchased my Snowbunting in 1990 when I was in college. I have used it climbing, mountaineering, backpacking, rafting, and canoeing in the Cascades, the Andes, the Rockies, the Swiss Alps, all over the United Kingdom, and Northern Japan. It is the only sleeping bag I have, and it is absolutely incredible. I could not recommend it more. It has survived all types of weather and conditions, and it is still going strong after 26+ years. This coming fall, I will be purchasing two more for two of my sons that are climbing and mountaineering more and more. You will not be disappointed with this bag. (Posted on 8/19/2017)
I'm a feathered friend for life!Review by JBO
I have winter camped in the Adirondacks for many, many years. Last year I decided to purchase a feathered friends bag after many nights of just getting by with my older synthetic 0 degree bag. This bag has far exceeded my expectations. I recently spent the night in the Adirondacks with a nighttime low of almost -30 F. All I had were base layers on and a down sleeping pad underneath me and I was warm the whole night. That's over 20 degrees below this bags rating. I was in a lean-to, open face with wind so it was probably closer to lower 30's with the wind chill. This bag preformed so well that I am going to purchase another one for the summer time. I just wish I got one earlier. I am sold on this company as the best sleeping bag company. Thanks Feathered Friends.

*On a side note, I am 5'9, 160 lbs. athletic frame and I decided to go with the 64" width over the 60" widgeon. To me this bag feels normal as the 60" cut is a bit claustrophobic in my opinion. (Posted on 2/18/2016)

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