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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.
UL: Ultralight. Pertex® Endurance® 10 denier water-resistant/breathable fabric.
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
|Ideal Sleeper Height||Reg 6' 0" / 183 cm
Long 6' 6" / 198 cm
|Dimensions||58" shoulder / 52" hip / 38" footbox|
|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|
Reg 14 oz / 397 g
Long 14.6 oz / 415 g
Reg 11.5 oz / 327 g
Long 12 oz / 342 g
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
Almost perfect! but earns 5 stars anyways
For reference ai am 5’-6” 150 lbs. athletic build. Literally just came back from a backpacking trip to Wayne National Forest where temperatures went down to low 30˚. I tend to sleep on the hot side so only wearing base layers but was kept nice and toasty in the Hummingbird 30. No complaints in the warmth department. Space was enough for someone my stature to allow for movement and turns as I do often change my position during sleep. Packs down as small as my pillow taking little space in the backpack and weight next to nothing as well. Overall, I am extremely happy with the Hummingbird 30, but only wish it had a pocket inside to keep my phone warm when temps hit below freezing as they did this past weekend.
Just incredible! Perfect 3 season bag!
It’s my first 950+ FP bag, it just packs down to nothing. Everything now fits in a 20L backpack for a weekend hike. And it’s warmer than I thought. I think it’s a perfect 3 season bag! I read that it can be snug, but for me it fitted just right. I'm 172 cm ~ 5′8″, 72kg ~ 159lbs.
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!
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.