The Feathered Friends Raven 10 YF is the roomier variant of the Raven mummy bag, built for broader builds — compared with the UL version it offers more space (155 cm shoulder, 145 cm hip, 112 cm foot box) at the cost of a somewhat higher 1022 g weight. Fill consists of 632 g of RDS-certified 900+ fill power goose down, and the Pertex YFuse shell (20D mini-ripstop) is water-resistant rather than membrane-backed.
Continuous baffle construction keeps the down evenly distributed, a full-length, two-way zipper on the left side lets you regulate warmth without fully opening the bag, and a draft collar with draft tube limits heat loss at the zipper. The fitted, contoured hood rounds out head insulation. It's not coupleable with another bag to form a double.
At 11 L packed volume, it's reasonably compact for the weight class. The liner is recycled and bluesign certified, both a stuff sack and storage sack are included, and the bag is made in the USA — a four-season option suited to winter weekend trips short of extreme cold.