Enlightened Equipment Conundrum -10 850

The Enlightened Equipment Conundrum -10 850 is the coldest-rated version of EE's hybrid quilt/bag line, combining a sewn-closed footbox with a partial-length side zipper so it closes up more like a sleeping bag than an open quilt. It is filled with 850 fill-power RDS-certified duck down — 754 g of fill inside a 1035 g total weight — and carries a -10°F (-23°C) manufacturer rating, putting it firmly in winter-expedition territory rather than general three-season use. At a warmth-to-weight figure trailing EE's 950-fill equivalents, the trade-off is cost efficiency: duck down needs more fill weight than goose down to hit the same temperature rating. This particular listing is a Regular-size cut with a 183 cm maximum user height and 183 cm internal length, so taller hikers should check EE's long or extra-long options. A DWR-treated 10D nylon shell, sewn-through vertical baffles, pad loops, and an included stuff and storage sack round out a quilt aimed at cold-weather backpackers who want bag-like containment without giving up a quilt's lighter build.