Nike AeroLayer Men's Running Vest. Black. Medium

100% Nylon Care Instructions Machine Wash Origin Imported About this Item Therma-FIT technology helps manage your body's natural heat to help keep you warm in cold-weather conditions. Synthetic-fill insulation is placed throughout for warmth. It has perforations for optimal breathability. We've introduced a new take on an icon. A special stitching technique brings a new take on quilting with a nod to the Windrunner's chevron. Mock neck design helps keep warmth in. Zipped hand pockets help stash small items. Reflective design elements