Swallow UL 20/30 Sleeping Bag
Swallow UL 20/30 Sleeping Bag
Swallow UL 20/30 Sleeping Bag
Swallow UL 20/30 Sleeping Bag

Swallow UL 20/30 Sleeping Bag

Regular price Sale price$629.00
81 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!


Hands down the most popular bag we've ever made, and for good reason. Compared to other mummy bags in the market, the Swallow is the ideal combination of light-weight warmth with room to sleep thanks to a more relaxed cut (more spacious than the Hummingbird, narrower than the Swift). The Swallow is the definition of an ideal all-around backcountry sleeper that can satisfy a wide range of three-season conditions.

Available in 20 Degree and 30 Degree options.

Looking for the Osprey 30 UL? You're in the right place! The Osprey 30 has been renamed the Swallow 30.

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


 Switchback Travel Logo 

"Best Overall Sleeping Bag"


The Trek

"This has become my go-to option for most of my backpacking trips, especially if temperatures are expected to approach or dip below freezing."


  • Mummy shape (medium width) with #5 YKK two-way, separating zipper with locking sliders
  • Passive 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

Additional Info

Ideal Sleeper Height
Reg 6' 0" / 183 cm
Long 6' 6" / 198 cm
Dimensions 60" shoulder / 56" hip / 38" footbox
Zipper Left 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 20ºF / -6.67ºC 30ºF / -1.1ºC
Fill Weight Reg 1 lb 0.8 oz / 476 g
Long 1 lb 1.5 oz / 497 g
Reg 13.6 oz / 385 g
Long 14.2 oz / 402 g
Average Weight Reg 1 lb 11 oz / 766 g
Long 1 lb 12.5 oz / 808 g
Reg 1 lb 9 oz / 710 g
Long 1 lb 10.2 oz / 744 g
Packed Size 9L 8L


Customer Reviews
4.8 Based on 81 Reviews
5 ★
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United States United States

Warm So Far

I’ve only used it so far when the temperature was 40°and slept in a long sleeve shirt and I was actually too warm and had to unzip the bag. Plenty of room to sleep on my side. Looking forward to testing in colder temperatures. Packs really small and is very light. Will post another review later this Winter

Zachary Y.
United States United States

Warm and comfy, but a few issues

Very comfortable bag and warm, though I’ve only taken it out down to about 40 so far. Definitely a couple of quality issues that have me second guessing my purchase though, given how expensive it was. First of all the drawstring on the hood/collar is very flimsy and doesn’t hold firm after you set it. This was called out on a couple of other reviews as well but I brushed it off because of the overwhelmingly positive response overall. Secondly, one of the seams is a little leaky as I tend to have a few feathers on me in the morning even just after the first use. Not sure where they’re coming from but again, annoying given the price. Third the hood is very shallow and doesn’t comfortable cradle my head even when tightened significantly (and I have a small head). This isn’t a huge deal as I can sink my chin under the collar to compensate but all of these things together really have me questioning why this bag is so popular.

Durs K.
United States United States

A wonderful sleeping bag. I feel I really got my money's worth.

The bag is my favorite of the five bags I own. Quality throughout. I like the roominess of this sleeping bag. Not too big and not too tight.

  • 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

Happy Customer

Warm , light, and made in America

Feathered Friends Swallow UL 20/30 Sleeping Bag Review
Mark A.
United States United States

Great Sleep

Packs up light and small (fitting into an XS 9L stuff sack). Saves over a pound of weight from my old sleeping bag but is just as warm if not more so. Wide enough that when I'm sleeping on my back I can comfortably let my arms rest by my side. Good improvements in the type of zipper that prevents catching the bag in the zipper. Have enjoyed every use and so thankful for the weight savings.