Patagonia mens Bivy Down Jacket 28322 Shell: 4.8-oz 100% nylon plain weave (51% recycled) with a DWR (durable water repellent) finish. Yoke and collar: 4-oz 100% nylon with a polyurethane coating and a DWR (durable water repellent) finish. Lining: 2.2-oz 50-denier 100% recycled polyester taffeta with a DWR finish. Insulation: 600-fill-power 100% recycled down reclaimed from used down products. Shell, yoke and lining fabrics are bluesign approved Made of 100% nylon plain weave (51% recycled) with a DWR (durable water repellent) finish insulated with 600-fill-power 100% recycled down reclaimed from used down products Full-zip jacket with zip-through stand-up collar Features nylon plain-weave shell with cotton-like look and feel with a reinforced yoke that offers an extra barrier for weather protection Two insulated, side-entry handwarmer pockets with snap-button closure for security and lined with microfleece for next-to-skin comfort; interior left-chest security pocket with zipper closure