So packable that you'll choose it over that old frumpy fleece every time you need extra warmth, the women's Mountain Hardwear Nitrous down jacket uses 800-fill down to turbocharge trips into the cold. Premium 800-fill-power goose down is extremely compressible and offers exceptional warmth for its weight Ripstop polyester shell is downproof and incredibly light, and has a Durable Water Repellent finish to fend off light moisture Quilted construction keeps the down from shifting, so cold spots just don't happen Mountain Hardwear Nitrous down jacket for women features a chin guard lined with soft microfiber chamois to protect against zipper abrasion. Handwarmer pockets; dual hem drawcords; jacket stows in pocket; full elastic cuffs slide easily over layers to seal in warmth