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
58 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 58 Reviews
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Filter Reviews:
Porter E.
United States United States

Hummingbird 20

Really happy I picked this over the roomier swallow, just the right amount of room for me with a bit left over for layering (140lbs 5’8”) The quality of construction and materials is without fault, my only criticisms are minor in the hope FF further improves this fabulous bag. The zipper plow does does do a good job preventing fabric snags, but it’s slow and a bit clunky to operate. I prefer the oversized dual fabric stiffeners running the length of the zipper on WM bags as a snagging solution, paired with a smooth operating standard slider. Arguably a 20 degree bag ought to have a proper draft collar. There really is none whatsoever on this bag, so when you need it to perform at its warmest it’ll mean cranking down the hood tight around the face. Personally I’m happy with none, knowing that I can add an insulated jacket for easier comfort when nearing the bags lower limit. When temps are regularly below freezing I’m switching to a warmer bag anyway. But for folks wishing to use this bag below freezing without the help of an insulated jacket, I would recommend considering alternatives with a real draft collar. Lastly, I wish FF would offer at least three length options. 5’10”, 6’2”, and 6’6” I think would make a lot of people happy with a more accurate fit. Overall a lovely bag I look forward to using for many years, thanks feathered friends!

United States United States

Hummingbird UL 20

Excellent. It seems like an ideal 3 season bag for backpacking. Perfect combination of lightweight yet very warm and just roomy enough.

  • 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
John B.
United States United States

Porcupine Wilderness

This bag kept me warm backpacking in the Porcupine Wilderness. It’s light weight was key, as small pack size.

Feathered Friends Hummingbird UL 20/30 Sleeping Bag Review
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!