We made a favorite even warmer. Take our most popular 20 degree model, the Swallow, add a full collar and additional fill, and you have a rock-solid three-season bag that packs remarkably small while maintaining room to sleep comfortably. Filled with premium 900+ fill power goose down, the Lark YF represents an excellent option for those who sleep on the cold side or push their adventures well into the colder evenings of spring and fall.
Our YF line of sleeping bags feature a lightweight, 100% nylon Pertex® Quantum® shell that uses yarns with unique Y-shaped filaments to create a fabric with increased downproofing and water beading properties, even after years of use and washing.
YF: YFuse. Pertex Quantum® 20 denier mini-ripstop fabric treated with a DWR (durable water repellent) finish.
Details
- Mummy shape (average width) with #5 YKK two-way, separating zipper with locking sliders
- Full collar provides an effective seal 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
- Includes storage bag & stuff sack
Sizing
Mummy Sleeping Bags
Feathered Friends standard-width mummy sleeping bags are ideal for most people - a balance of space without too much excess.
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 - We're happy to help!
Additional Info
| Ideal Sleeper Height |
Reg 6' 0" / 183 cm Long 6' 6" / 198 cm |
|---|---|
| Dimensions | 60" shoulder / 56" hip / 38" footbox |
| Zipper | Left Side, YKK #5 |
| Shell | Pertex® YFuse® |
| Lining | 100% Recycled 20 Denier plain weave 37g/m² |
| Fill Power | 900+ Goose Down |
| Origin | Made in Seattle, USA of imported materials |
| Temp Rating | 10ºF / -12.2ºC |
|---|---|
| Fill Weight |
Reg 1 lb 4 oz / 568 g Long 1 lb 5.2 oz / 600 g |
| Average Weight |
Reg 2 lb 1.4 oz / 946 g Long 2 lb 3.5 oz / 1005 g |
| Packed Size | 11L |