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. The Lark 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.
UL: Ultralight. Pertex® Endurance® 10 denier water-resistant/breathable fabric.
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