Marmot Women's Ouray 0° Sleeping Bag

Built for genuine winter conditions, the Marmot Women's Ouray 0° is a four-season mummy bag rated to a -18°C limit and -10°C comfort, insulated with 1050 g of 650-fill-power duck down. The down carries RDS certification for responsible sourcing and Down Defender hydrophobic treatment, while the 30D nylon shell and liner add a DWR finish. At 1740 g it is unambiguously a cold-weather tool, not a three-season weight optimization: fill efficiency of roughly 1.71 and a warmth-to-weight ratio of 10.3 reflect a bag prioritizing total warmth over minimal grams. A fitted contoured hood, insulated draft collar and draft tube, and footbox ventilation are standard winter-bag features, and the dual-side two-way zipper allows venting or bag-to-bag coupling. Both a stuff sack and storage sack come included. Sized for a regular fit up to 168 cm, it suits winter backpacking, mountaineering base camps, and cold shoulder-season nights, where roughly 97 g per degree is the price of reliable performance below freezing.