The North Face Mens Aconcagua Jacket Down,Manmade,Nylon,Polyester Imported Polyester lining Machine Wash The North Face Size Chart The trusty Aconcagua is the ideal go-to jacket for everything from dog walking in the middle of winter to cold-weather camping. Relaxed Fit. Nylon shell:&#8226; 40D nylon shell in a durable woven face.&#8226; DWR (durable water repellent) finish offers water-resistant protection.&#8226; 65 g/m&#178; fabric weight. Insulation:&#8226; Goose down insulation offers high warmth with low weight.&#8226; Pairs with Heatseaker&trade; polyfill insulation at the side panels.&#8226; Responsibly Sourced Down process ensures that the insulation does not come from birds that have been live-plucked, or force fed, and that their welfare has been protected throughout their lifecycle. &#8226; 550 fill-power down blend.&#8226; 150 g/m&#178; polyfill fabric weight. Stand collar with soft, brushed inner face. Full-length zip w