


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

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 |
Original: $459.00
-65%$459.00
$160.65Product Information
Product Information
Shipping & Returns
Shipping & Returns
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

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 |






















