Feathered Friends Hummingbird UL 20/30 Ultralight Sleeping Bag Azure Blue
The Hummingbird 20/30 Degree Ultralight Sleeping Bag - Clover Green
Feathered Friends Hummingbird UL 20/30 Ultralight Sleeping Bag Tangerine Orange
Feathered Friends Hummingbird UL 20/30 Ultralight Sleeping Bag Titanium

Hummingbird UL 20/30 Sleeping Bag

Regular price Sale price$609.00
55 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!

When every gram counts and warmth can’t be compromised the Hummingbird is the versatile bag of choice. With the slimmest cut in our lineup, the Hummingbird leaves no room to spare; perfect for going fast and light. The Pertex® Endurance® UL variation with 950+ fill power down is our lightest mummy bag ever.

Available in 20 Degree & 30 Degree options.

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

Hummingbird too tight for comfort?  Check out the Swallow or Swift for the same great features with a little more room.

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

"The Hummingbird is almost magical for the warmth and comfort it provides in such a lightweight package."
- OutdoorGearLab

Feathered Friends Hummingbird 30 OGL Top Pick

OutdoorGearLab rated the Hummingbird UL 30 their Top Pick Award
Check out what they had to say about this ultralight sleeping bag Read the Review


  • Mummy shape (narrow) 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 58" shoulder / 52" 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 14 oz / 397 g
Long 14.6 oz / 415 g
Reg 11.5 oz / 327 g 
Long 12 oz / 342 g
Average Weight Reg 1 lb 8 oz / 680 g
Long 1 lb 9.4 oz / 720 g
Reg 1 lb 5.4 oz / 606 g 
Long 1 lb 6.4 oz / 635 g
Packed Size 9L 8L


Customer Reviews
4.8 Based on 55 Reviews
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Filter Reviews:
Nikolett N.
United States United States

Best choice ever!

I am really-really satisfied with my Hummingbird. The reason why I choose this sleeping bag that I am really cold when the temperature under 10 - my feet and waist are always freezing - BUT I wanted to get a lightweight sleeping pad. After an all-encompassing research the best solution for me was the Feathered and Friends gears. I tried the Hummingbird at the last week in Danmark and it was awesome. One of my best choice ever!

United States United States

Perfect for backpacking

I first used this on a 3-day backpacking trip in the Adirondacks. The sleeping bag was incredibly light and kept me nice and toasty. Looking forward to using it again!

United States United States

So lightweight and SO warm

I've been toasty using this bag, and it's dramatically more lightweight than my other feathered friends bag. They had to compromise with a lighter weight fabric, which feels more vulnerable to rips. I will be babying this bag to keep that fabric from tearing. You really can't go wrong with FF bags they're top of the line with transparency into the source of down.

Vinnie F.
United States United States

Best Bag!

I've owned this bag for about 2 years now and it's incredible. I use it mostly for motorcycle camping and backpacking. I use the size XS Sea to Summit eVent compression dry bag and it compresses down to a little larger than a softball in my pack and then fluffs up pretty quickly when I pull it out in my tent. Wearing just a pair of compressions style long johns I can sleep comfortably down to about 30 degrees and with an added sweater and a pair of socks down into the 20's. This is paired with an uninsulated inflatable sleeping pad. I do have another 0 degree rated bag if I am going camping in the snow but it is much larger when it's packed down. This bag is also great on warmer night to leave unzipped as more of a blanket and it's not too warm. My only real complaint is that I wish it had some sort of a collar flap around the opening to help keep out some of the draft around your neck on colder nights. No matter how long of a day you've had it really hard to crawl inside of this bag not smile as you zip it up around yourself!! :)

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

Cozy and almost perfect

I got this bag for some cold weather hiking on the PCT, and it worked very well. Temps got down in the low 30s, and I was cozy and warm in the bag, paired with a Thermarest X-therm pad. I agree with others who have called out the zipper design, which is excellent, and works very well without jamming. There’s an integrated stuffed roll all along the zipper that lies over it when closed so there’s no heat loss there. The bag is also very light and packs down quite small by stuffing it into the bottom of my backpack. I didn’t get a compression sack for it. I’m a little over 5’-7”, so I ordered the 6 ft model, since I worried the 5’-6” version would be too short. Unfortunately there’s a bit too much air space down around my feet, and oddly not quite enough around the middle where I need room for my arms. I’m also not crazy about the cinch cord around the face opening. I tried it with a small pillow inside, and also with no pillow inside, and I found it hard to get a good seal around my face without feeling choked, it tends to leave gaps on the sides, but these are quibbles really. It’s a great quality bag and it kept me warm and cozy at night. Sleeping in cold weather with a bag like this is no problem, it’s getting OUT of the bag in the morning that’s the problem! BRRR! Thanks, Feathered Friends.

  • 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