Swallow UL 20 Sleeping Bag

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 in a temperature rating that can satisfy a wide range of summer conditions.

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

Availability: Select Color & Length for Availability

Availability Information

From: $529.00

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  • 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


Mummy Sleeping Bags

Feathered Friends standard-width mummy sleeping bags are ideal for most people - a balance of space without too much excess.

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 950+ Goose Down
Fill Weight Reg 16.7 oz / 476 g
Long 17.5 oz / 497 g
Lining Fabric Flite 15 denier ripstop nylon
Country of Origin Made in Seattle, USA of imported materials
Packed Size 9L
Average Weight Reg 27oz / 766g
Long 28.5oz / 808g
Sleeping Bag Shell Fabric Pertex® Endurance UL
Temperature Rating 20ºF / -6.67ºC
Zip Side Left

Customer Reviews (4)

wow!Review by CKimmerle
Just got my Swallow UL and spent a night outside in temps hovering around 20F. With only a light base layer I was warm and toasty. I am 5'11" and 185, and opted for the large to give the foot box plenty of space. The down-tracker results included with the bag showed the fill-power to be 975. Amazing. The bag, with the small stuff sack, weighed 1# 13.75oz, which is right in line with their specs. I could not be happier.

My only complaint is that the bag lofts so much and so fast that it is hard to stuff it into the small stuff sack :) (Posted on 1/6/2018)
Toasty!Review by Mr. Marr
Wow, this thing is warm! Spent a few nights camped in the Squaw Valley parking lot early this spring in the mid to high 20s. I was really impressed by how warm the bag was. I would say Danny's previous comment matches up with my experience exactly. I just had a t-shirt and mid weight thermal pants on and found myself unzipping the bag a little to cool down. (Posted on 5/5/2017)
PerfectReview by Danny
This was the first bag I have purchased in a while. I have been using both synthetic and down but this bag is really quite special. Super light, super lofty, able to move the down around a bit to adjust where you need it and I have gotten out several times now since purchased. I've had it ~ 10 dF below it's rating and was quite comfortable. At 30 dF with light cotton pants and a thin top, I was actually too warm and I had to take off the light beanie I was wearing. Did I say that the tangerine looks awesome as well! Thanks FF. (Posted on 1/16/2017)
AwesomeReview by Guest
Ordered the Swallow with the Pertex UL fabric and it is hands down the best bag I have ever used. I ordered it, and within a week and a half it was waiting on my door step. It is the definition of quality. The folks at Feathered Friends have a customer for life. Couldn't be happier.
(Posted on 8/20/2013)

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