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The Petrel UL 10 is a women's three-season down mummy bag built around 950+ fill power down and a Pertex Quantum Pro water-resistant shell. It adds extra down in the footbox and a full draft collar to keep cold sleepers warm, while continuous baffles let you shift loft where you need it. It is light for its warmth, which makes it a strong pick for spring and fall trips and cold-sleeping summer users. Rivals in this class trade some weather protection or foot warmth for lower weight; the Petrel leans toward warmth and durability instead.
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Lowest price we've seen: $669.00 on Nov 12 at Feathered Friends. Tracked across 1 store since Nov 12.
The Petrel UL 10 is an ultralight women's mummy sleeping bag rated to 10ºF / -12.2ºC. It is built for three-season use, including spring and fall trips and summer nights for cold sleepers. It has extra fill in the footbox while keeping a slim profile.
The shell is Pertex Quantum Pro, a water-resistant, breathable fabric, filled with 950+ fill power goose down. The footbox is lined with Pertex Diamond Fuse 15 denier fabric for more abrasion protection. Continuous baffles let you move the insulation where you need it.
A full draft collar adds a cushion of down around the neck, and a draft tube keeps cold air from seeping past the zipper. The 3D contoured hood opens wide on warm nights and cinches tight when it gets colder. The trapezoidal footbox lets your feet rest in a natural position without compressing the sides.
