Hummingbird UL 20 Sleeping Bag

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® variation is our lightest 20 degree bag ever.

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

Shipping Notice

With frigid weather and scorching demand, many Feathered Friends products may take a little extra time to complete at our Seattle factory. We do recommend ordering as soon as possible so your order can enter our production queue. If you have a trip coming up, please feel free to Contact Us to see which products are available for shipment!

Availability: Select Color & Length for Availability

Availability Information

From: $479.00

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  • 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
  • Overlapping dual-webbing zip guard guides the fabric away from the zipper and eliminates the need for a stiff or heavy fabric layer that can interfere with the draft tube seal
  • Includes storage bag & stuff sack


Mummy Sleeping Bags

Feathered Friends narrower mummy sleeping bags are ideal for those looking for the lowest bulk and weight, or those with thinner builds

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 58" / 52 "/ 38"
Fill Power 950+ Goose Down
Fill Weight Reg 14 oz / 397 g | Long 14.6 oz / 415 g
Lining Fabric Flite 15 denier ripstop nylon
Country of Origin Made in Seattle, USA of imported materials
Packed Size 7" x 12" | 9L
Average Weight Reg 1 lb 9 oz / 717 g | Long 1 lb 10 oz / 750 g
Sleeping Bag Shell Fabric Pertex® Endurance UL
Temperature Rating 20ºF / -6.67ºC
Zip Side Left

Customer Reviews (2)

Ultralight and warm. What more could you want?Review by Jon
When upgrading a few pieces of gear last year, I chose the Hummingbird UL 20 over two other top rated bags. After taking it along on treks through the Tetons, Iceland and the Adirondacks, I can confidently say this is the best down bag I've ever owned. Incredible loft, awesomely light weight and super warm. Absolutely worth every penny. Loved it so much, my fiancée and I splurged on a Feathered Friends down comforter this year. (Posted on 9/8/2016)
Awesome Summer BagReview by Bryan
This is my summer bag. Love this thing. It is incredibly comfortable and well sized. Very light weight, extremely high quality. (Posted on 1/7/2016)

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