Hummingbird UL Ultralight 20/30 Degree Down Sleeping Bag

Name: Hummingbird UL 20/30 Sleeping Bag
Brand: Feathered Friends
SKU: 600102
Price: 639.0 USD
Availability: OutOfStock

$639.00

Temperature

20 Degree

30 Degree

Length

Regular

Long

Color — Graphite

Cerulean

Flame

Graphite

Undyed

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Feathered Friends sleeping bags take 6-9 days to ship.

Please view our Shipping information here for updated shipping times.

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.

Dimensions

The interior circumference of Narrow Width Feathered Friends mummy sleeping bags is measured at four points: the shoulders, at the elbows, around the hips, and at the feet.

SHOULDER: 57" / 145cm
ELBOW: 60" / 152cm
HIPS: 53" / 135cm
FEET: 41" / 104cm

Have questions on sizing? Feel free to Contact Us - We're happy to help!

New for Fall 2025: The Hummingbird UL gets all-new Pertex® Quantum Pro® shell fabric + Pertex® Diamond Fuse lining fabric in the footbox, plus new and familiar colors

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® Quantum Pro® variation with 950+ fill power down is our lightest mummy bag ever.

Available in 20 Degree & 30 Degree options.

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

UL: Ultralight. Pertex® Quantum Pro® water-resistant/breathable fabric with 950+ Fill Power Down

Details

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
Pertex® Diamond Fuse 15 denier footbox lining that offers more abrasion protection for more nights at camp
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	57" shoulder / 60" elbow / 53" hip / 41" footbox
Zipper	Left Side
Shell	Pertex® Quantum Pro® 7 denier + 30 denier ripstop weave The durable water repellent (DWR) finish on our Hummingbird UL Sleeping Bags is made without intentionally added perfluorinated chemicals (PFCs/PFAS)
Lining	Flyte 10 denier recycled nylon + Pertex® Diamond Fuse 15 denier footbox
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 / 399 g Long 14.8 oz / 420 g	Reg 11.5 oz / 323 g Long 12 oz / 345 g
Average Weight	Reg 1 lb 8.2 oz / 687 g Long 1 lb 9.5 oz / 723 g	Reg 1 lb 5.6 oz / 611 g Long 1 lb 6.9 oz / 648 g
Packed Size	9L	8L

UL FAQs

Our UL-series sleeping bags get upgraded with a quieter Pertex® Quantum Pro® shell fabric, as well as the introduction of Pertex® Diamond Fuse lining fabric in the footbox for more long-term abrasion resistance.

Undyed fabric is just that: undyed. Both the shell and lining fabrics (except for the footbox lining) have not been treated with dyes (color), so it is an option for those looking for the same benefits of Pertex® Quantum Pro® but with environmental advantages such as reduced water consumption and a lower chemical footprint.

Undyed is more transparent than dyed fabrics.

Undyed UL sleeping bags will take longer than our other colors to manufacture. Please allow up to 2 to 3 weeks for production.

Pertex® Quantum Pro®

We pair this ultralight Pertex® Quantum Pro® fabric with 950+ fill power down for one of the lightest sleeping bag combinations out there. Water-resistant, breathable, and surprisingly durable, this fabric will help you go the distance.

7 denier + 30 denier ripstop weave25g/m^2 fabric weight
Water and wind resistant Pertex® Quantum Pro® coating
Made from recycled nylon yarn
DWR finish made without intentionally added PFAS

Pertex® Diamond Fuse

Inspired by feedback from the thru hiking community, we’ve added Pertex® Diamond Fuse fabric to the foot boxes of our UL sleeping bags. The interlocking diamond-shaped yarn resists pilling, providing improved abrasion protection against rough hiker feet.