Early starts, late finishes, dropping temperatures. The Nike Lab Therma-FIT Running Flash Vest is built for all three. Combining Nike's heat-retaining Therma-FIT technology with lightweight insulation, it delivers dep***able warmth without weighing you down. A reflective finish helps keep you visible on post-sunset runs, while the durable ripstop shell and five-pocket design ensure practicality when you're on the move. Body, Lining & Fill: 100% Polyester Nike Therma-FIT Technology 2 Way Zip Closure Whistle At Left Collar Reflective Design Face On Fabric 4 Zip Pockets Zip Back Pocket Hand Wash Style Code: IU5523-938