Ptarmigan EX -25 Sleeping Bag

Built for big mountain expeditions and frigid conditions, the Ptarmigan is one of the lightest and warmest bags around. We combined the finest materials and our time tested design to bring you a bag that can handle the rigors of mountaineering use and provide a warm respite at the end of a long day.

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: $779.00

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  • Mummy shape (average 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
  • 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 Ptarmigan is built with our standard-width mummy shape - for most people, this will have enough space for a bit of extra gear without too much extra volume.

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 60" / 56" / 38"
Fill Power 900+ Goose Down
Fill Weight Reg 35.5 oz / 1,006 g <br >Long 37.5 oz / 1,063 g
Lining Fabric Pertex® 30 denier nylon taffeta
Country of Origin Made in Seattle, USA of imported materials
Packed Size 30L
Average Weight Reg 3 lb 12 oz / 1,708 g <br >Long 4 lb 0 oz / 1,803 g
Sleeping Bag Shell Fabric Pertex® Shield EX waterproof/breathable
Temperature Rating -25ºF / -31.67ºC
Zip Side Left

Customer Reviews (2)

Monster BagReview by Shark
Took this bag up Aconcagua and it delivers. Super warm, great baffling along the zipper & around the neck. No cold spots and definitely kept me warm in below zero temps. At first I was a little worried at how big (volume wise) the bag not in a compression sack but it really squishes down and is super compressible for a bag of this temperature rating. If your doing alot of cold weather camping I cant recommend this bag enough. (Posted on 1/14/2019)
Extremely happy with this beastReview by Bill
I was excited to get my bag and take it for it’s maiden voyage in the Rockies of Alberta. The day was a bit warm, roughly -15C, so I was worried I wouldn’t be putting it to it’s potential. The night however, came in cold and windy. At -30C I was toasty. The hood did an excellent job at keeping my head warm while keeping condensation from breathing out of the inside. The zipper is possibly my favourite part, as With any sleeping bag getting a zipper jam is pretty annoying. No jam with this design. No draft through the zipper either. Extremely comfortable. I’m a bit of a smaller guy and the regular size I was able to fit my clothes bag, water, and liner with space for more. Not too big that it gets dead spots. All around a very good sleeping bag, I would recommend to anyone who likes to adventure in the winter. Especially in Rockies in winter. Can’t wait to get back out there! Thanks feathered friends!! (Posted on 2/23/2018)

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