A great choice for cold days, whether windy or calm. Made with top quality RDS certified down, the Diablo is one serious package of warmth. Wear on a break over a shell, or in general use on top of a mid layer. This renewed model boasts upgraded surface fabrics. They are now 100% recycled polyester and "Diamond Rip Stop" fabric, resulting in much better durability, and as a bonus, simply better looks. The manufacturer's recommended use has also extended to hiking use, whereas the previous version was more city oriented. Initial comments about the Diablo Down's sizing: "Small sizing, narrow sleeves." - RDS certified down fill - Ripstop nylon fabric - Two hand pockets and an inside pocket - Elastic cuffs - Adjustable hem - Comfortable inner collar