The Outdoor Research Men's Alpine Down Hooded Jacket is Upper body warmth for climbs reaching 6000 meters. High altitude can't go without toasty warmth and the 800 fill power down is up to the challenge. It drops the weight while remaining packable for the days you don't need to wear it. Features of the Outdoor Research Men's Alpine Down Hooded Jacket Helmet compatible hood Halo hood Two internal shove-it pockets Zip chest pocket Zip hand pockets Internal zip chest pocket Left-hand pocket doubles as stuff sack Internal front stormflap Integrated hood cordlocks Water-resistant Wind-resistant Hybrid mapped construction Lightweight Dynamic reach underarm panels Double-separating center front zipper Hook / loop cuff closures Elastic drawcord hem Elastic cuffs Pocket placement above harness or pack belt Incredibly lightweight but remarkably strong and durable Pertex Quantum is a superlight down-proof synthetic fabric used in much of our down insulated appArel Pertex Quantum fabric you trust, now with an ultra-thin water-resistant coating that maximizes the thermal efficiency of Insulation 800 Fill power responsibly sourced goose down Insulation Fabric Details Pertex Quantum Y Fuse 100% Nylon 15D body Pertex Quantum Pro 100% Nylon 30D Upper