Feathered Friends Lark 10 YF Sleeping Bag

The Feathered Friends Lark 10 YF is a variant of the Lark 10 built with a Pertex YFuse shell instead of the thinner Endurance UL fabric — it weighs almost 60 g more than its UL sibling (946 g) but matches the same -12°C limit rating thanks to an identical 568 g of goose down, here rated at 900+ fill power. The Pertex YFuse 20D mini-ripstop shell is more abrasion-resistant and more water-repellent than ultralight face fabrics, the liner uses NetPlus recycled nylon made from fishing nets, and the materials carry Bluesign certification. A contoured hood, draft collar and draft tube pair with a full-length two-way zipper that opens flat for venting or use as a quilt. Made in Seattle and RDS certified, the bag includes a stuff sack and storage sack, with the unisex Regular size fitting up to 183 cm. The Lark 10 YF suits hikers who would rather trade a handful of grams for a tougher, more sustainably sourced shell than chase the absolute lightest option.