The Western Mountaineering Hooded Flash Jacket is the perfect balance of warmth, weight, and performance. The shell fabric is a tightly woven nylon material that weighs only 0.9 oz. per square yard! The Flash is extremely lightweight, has just enough warmth, yet it&';s not too bulky. 850 Plus Fill Power Goose Down Insulated hood Down Filled Front Pockets YKK Lightweight Reversed Coil Zipper Lightweight 0.9 oz. Dot-Ripstop Nylon Shell Fabric Down Filled Draft Tube Behind Zipper Made In Canada Western Mountaineering Men&';s Jacket & Vest Sizes Size Chest Waist