Don't let chilly temps stop you from running. A smooth, water-repellent shell teams up with synthetic insulation and a heat-regulating back panel to give you lightweight warmth in a made-to-move design. Benefits:Nike Therma-FIT technology helps manage your bodya (TM)s natural heat to help keep you warm in cold-weather conditions. Synthetic fill helps keep you insulated and warm. Drawcord at the waist lets you cinch in the vest for a more tailored fit. Brushed knit back panel offers the stretch you need for easy movement. Zippered side pockets offer secure storage for small essentials. [] Product Details:Body/Lining/Fill/Back of panels fabric:100% polyester. Face of panels fabric:82% polyester/18% spandex. Reflective details. Whistle at collar. Not intended for use as Personal Protective Equipment (PPE). Machine wash. Imported. Style: HV2655; Color: Black; Size: XL; Gender: Female; Age Group: Adult | Nike Swift Women's Therma-FIT Running Vest in Black, Size: XL | HV2655-010