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
77 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.


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

- The Trek

Check out what The Trek had to say about our Swallow UL 20 Sleeping Bag here.

The Trek


  • 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 77 Reviews
5 ★
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Filter Reviews:
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.

Gregg M.
United States United States

Great so far

I’ve only used this 2 times but have no complaints. Nice, warm and light. Swapped out the sack it came with for a compression stuff sack.

Feathered Friends Swallow UL 20/30 Sleeping Bag Review
nicholas s.
United States United States

best bag I've found

My fire crew has been using this bag for over a decade due to its versatility in different climates as well as how compact it will get.

  • 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
Joe A.
United States United States

Love this bag!

So warm, so soft and comfortable, and really great packability. My only issue is that the drawstring on the stuff sack broke upon first use. I tied it back together and it functions perfectly fine regardless.

Murray R.
United States United States

Thumbs Up "Swallow"

I was looking for a suitable quality sleeping bag to replace my end-of-life Marmot and the advisor at Three Feathers recommended the Swallow UL 20/30 as their best match for it. After several uses in varying temperatures I am pleased to say that it surpassed my previous sleeping bag quality in terms of comfort in the low temperature ranges. I woke up to heavy frost my first morning out high up on the slope of the Continental Divide east of Denver CO and was cozy warm. On the other end of the spectrum, the desert night temperature in southern New Mexico was exceedingly hot and I was again comfortable sleeping under the unzipped sleeping bag using it as a comforter. The overall design and quality of materials that went into this sleeping bag appear superior to any off-the-shelf mass produced products.This is the perfect replacement sleeping bag meeting my requirements. While the cost of the Three Feathers products are a little more than other brands, you definitely get what you pay for. Keep up the good work Feathered Friends.