Vireo UL Sleeping Bag
Vireo UL Sleeping Bag
Vireo UL Sleeping Bag
Vireo UL Sleeping Bag
Vireo UL Sleeping Bag
Vireo UL Sleeping Bag
Feathered Friends

Vireo UL Sleeping Bag

$459.00
/
Length
Color

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.

Feathered Friends Vireo Sleeping Bag Width Dimensions Diagram

Dimensions

The interior circumference of the Vireo is measured at three points: the shoulders, around the hips, and at the feet.

SHOULDER: 66" / 170cm
HIPS: 48" / 140cm
FEET: 38" / 102cm

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

The Vireo was designed with a single purpose in mind; fast and light alpine climbs where every gram counts. With no hood, no zipper and a variable fill (the lower half is rated at 25ºF / -4ºC, the upper half 45ºF / 7ºC) the Vireo shaves every last ounce. For maximum efficiency and warmth, pair the bag with a down jacket to not only keep you cozy but also minimize extra gear and weight when it matters most. 

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

Best Uses: Ultralight Backpacking, Alpinism, Emergency Bivy


"For those who have their sights on first ascents, ultralight pursuits, or savings in weight and bulk with respect for RDS certified down, the top-shelf 900-plus* fill Vireo could be your ticket."
-GearJunkie

Read the Review!
*We currently use 950-plus fill power goose down for the Vireo UL

Details

  • No zipper to conserve weight and bulk
  • Drawcord on open end to cinch off apertures
  • Pertex® Diamond Fuse 15 denier footbox that offers more abrasion protection for more nights at camp
  • Designed to be worn with a down jacket for upper-body warmth
  • Differential fills - lower half is filled to 25ºF / -4ºC while the top half is filled to 45ºF / 7ºC
  • Stuff sack and cotton storage bag included

Additional Info

Interior Length 68" 68" / 173 cm
74" 74" / 188 cm
Dimensions 66" shoulder / 48" hip / 38" footbox
Zipper None
Shell Pertex® Quantum Pro® 7 denier x 30 denier ripstop

The durable water repellent (DWR) finish on our Flicker 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 25ºF (-4ºC) / 45ºF (7ºC)
Fill Weight 68" 8.7 oz / 247 g 
74" 9.4 oz / 267 g
Average Weight 68" 15.6 oz / 441 g 
74" 1 lb 0.7 oz / 474 g
Packed Size 5L

UL FAQs

Our UL-series sleeping bags get upgraded with a quieter, water-resistant 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.

  • 15 denier
  • 31g/m^2 fabric weight
  • Global Recycling Standard (GRS) certified yarn
  • Bluesign® Certified



Certified to the RDS

Our sleeping bags contain 100% Responsible Down Standard (RDS) down fill.

Certified to the Responsible Down Standard by TE-99977174.

Our Down

Reviews