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Vireo UL Sleeping Bag

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Vireo UL Sleeping Bag

New for Winter 2025/2026: 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 65" shoulder / 66" elbow / 52" hip / 40.5" 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" 15.2 oz / 431 g 
74" 1 lb 0.3 oz / 464 g
Packed Size 5L
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From $160.65

Original: $459.00

-65%
Vireo UL Sleeping Bag

$459.00

$160.65

Product Information

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Description

New for Winter 2025/2026: 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 65" shoulder / 66" elbow / 52" hip / 40.5" 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" 15.2 oz / 431 g 
74" 1 lb 0.3 oz / 464 g
Packed Size 5L
Vireo UL Sleeping Bag | Feathered Friends