Feathered Friends Petrel 10 UL Women&
Feathered Friends Petrel 10 UL Women&

Petrel 10 UL Women's Sleeping Bag

Regular price Sale price$599.00
44 reviews


Due to high demand, Feathered Friends sleeping bags take approximately two to three weeks 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.

*Sleeping bags may take up to two weeks to ship. Please check our Shipping Info page for more details. Thanks!*

Our warmest three season bag for the female adventurer. Based on the ideas of our testers, the bag features extra fill in the footbox and chest while maintaining a sleek profile and light construction to maximize the warmth from the 950+ fill down. The Petrel is not only an excellent choice for spring and fall adventures, but also a popular summer bag for the coldest of sleepers and a longtime favorite for summer climbs of Mount Rainier.

UL: Ultralight. Pertex® Endurance®10 denier water-resistant/breathable fabric


  • Mummy shape with #5 YKK two-way, separating zipper with locking sliders
  • Full draft collar provides an extra cushion of down around your neck to trap the heat
  • Trapezoidal footbox allows your feet to fall in a natural pose without compressing the sides
  • Continuous baffles let you position the insulation where you need it
  • 3D contoured hood opens wide for warm nights and cinches tight when the temps start to drop
  • Generous draft tube prevents cold air from seeping past the zipper
  • Includes storage bag & stuff sack


Mummy Sleeping Bags

Feathered Friends Women's mummy sleeping bags are built a bit more trim around the shoulders, but more space in the waist and hips.

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

Additional Info

Ideal Sleeper Height Small 5' 3" / 160 cm
Med 5' 9" / 175 cm
Dimensions 54" shoulder / 56" hip / 38" footbox
Zipper Right Side
Shell Pertex® Endurance® UL
Lining Flite 15 denier ripstop nylon
Fill Power 950+ Goose Down
Origin Made in Seattle, USA of imported materials
Temp Rating 10ºF / -12.2ºC
Fill Weight Small  1 lb 4 oz /  567 g 
Med  1 lb 5.3 oz /  604 g
Average Weight Small  1 lb 14.2 oz /  857 g 
Med  2 lb 0.3 oz /  916 g
Packed Size 11L


Customer Reviews
4.8 Based on 44 Reviews
5 ★
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Filter Reviews:
Sheena C.
United States United States


the sleeping bag is SO lofty (so much so that I struggle to get it back inside the bag it came with) and so comfortable. I’m a cold sleeper, and I slept warm on a night when the condensation froze over on my tent. I did have my puffy jacket and thick socks on. I chose this over the 0 down bag because this one is way more packable and light, and more versatile since I can use a thermo liner if I really needed that extra 10 degrees of warmth. I’m 5’1, and i was able to put my legs up and to the side in all sorts of weird positions loI. hope to keep this bag for a very long time!

  • 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
United States United States

such a cozy sleeping bag

after many chilly nights in the Sierra, I purchased this bag 6 years ago and have never had a cold night since! I love the hood and how the down cradles my neck. Also, I never need to wear socks to keep my toes warm as the toe box on this bag is super full of down. The size is perfect for me...I mostly sleep on my back, but even when I sleep on my side there is enough room to curl up my knees too. For how much warmth this bag provides, it is very light and compresses into a small 10L sack.

  • Fit Runs SnugVery Roomy
  • Warmth Not WarmExtremely Warm
  • How would you rate the quality? Not greatExcellent
United States United States


I have been waiting for a LONG time to find the perfect sleep system, and to be able to afford this bag but also for it to be in stock. Since purchasing, I have never slept better in the backcountry! I will be a feathered friends fan for life, and absolutely love my bag! I tend to run cold, and 30/20 degree bags did not work for me. This is comfy warm, like sleeping in a cloud and if you get warm, just unzip and stick your feet out. Couldn’t be happier, after trying out several different bags and warmth ratings. Super happy with my purchase. Thank you, Feathered Friends, for making the best bags around!

  • Fit Runs SnugVery Roomy
  • Warmth Not WarmExtremely Warm
  • How would you rate the quality? Not greatExcellent
Feathered Friends Petrel 10 UL Women's Sleeping Bag Review
Lora B.
United States United States

So much warm & fluffy down loft!

Backpacked for a week through the Sierra and most nights in September over 10,000 feet elevation and 35-42 degrees F temperature. For the amount of warmth this bag offered, it is very light to carry. It was easy to move down around within the baffles to put more down on the top of the bag. It was almost too roomy since bigger means more area to keep heated. The fabric wasn't too noisy and is soft. The extra baffle above the chest was easy to use and significantly helped warmth. The only thing that would make it better is a deeper space for the head so my pillow could fit while the headspace was cinched closed. So much fluffy down loft!

  • Fit Runs SnugVery Roomy
  • Warmth Not WarmExtremely Warm
  • How would you rate the quality? Not greatExcellent
Lyndsay R.
United States United States

Best sleeping bag ever

I LOVE this sleeping bag! I am a person who typically runs really cold and have always needed additional warming items (blankets, extra clothes, etc.) on top of my previous sleeping bags to keep me warm. This is the first sleeping bag I have used that keeps me so toasty and cozy through the whole night outdoors with supplemental warmth. The loft on this bag is incredible and the fit is just right. I am a pretty small individual, but I can still put my knees up inside the bag when I side sleep and when I sleep on my back. In addition, I love how light it is and how small it can compact. I would buy it again 100 times over.

  • 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