BNWT SIZE: XL COLOR: BLACK LIGHTWEIGHT. WARM. BREATHABLE. The Nike AeroLoft Women's Running Vest provides warmth and breathability so you can get out there. It's built to layer and to be easily pack away when you get too hot. It's also updated for better mobility, letting you move freely. Stay Dry and Warm A water-repellent finish on the body helps keep rain out. The baffles on the front and sides of the back feature sections of 800-fill down insulation. The fill has a DWR (durable, water-repellent) finish that repels moisture to help reduce clumping. Breathe Easy Perforations between the insulated sections and throughout the back allow air to flow and body heat to escape, helping to regulate your temperature. To help keep wind from hitting the front of the body directly, a thin liner backs the front perforations. Pack Away When you get too hot, the vest can be packed into a zippered pocket and held with an attached strap. Nike Flex fabric on sides, back and lower front panel for stretch * Two-way front zipper for a versatile fit * Zippered side pockets secure your cards, keys and cash * Fabric: Body/lining: 100% polyester. Panels: 88% polyester/12% spandex. Fill: Minimum 90% grey goose down. * Machine wash