The White Sierra Men's Header 3-in-1 Insulated Jacket is perfect for keeping the cold out. The 3-in1 Zip-in systems provide both shell and insulation options for versatility, warmth, and protection. It is made out of Waterproof/ breathable polyester. The fabric "breathes" by letting moisture vapor escape through the outer layers, while keeping out rain. It has a removable zip off hood so you can keep your head warm, or take it off on a sunny cold day. The Zip out liner can be worn on its own as a lighter duty jacket. It has waterproof zip secure chest pockets that will keep your valuables safe and dry whether you’re hitting the slopes or taking a walk down the street. It has a security pocket with a secure zip closure for your ID and credit cards as well as a goggle pocket, specifically for your ski goggles.