Great Condition. Medium. VENTILATED LIGHTWEIGHT WARMTH The packable Nike Aeroloft 800 Running Vest is designed to help keep you warm and comfortable without weighing you down. LIGHTWEIGHT INSULATION 800-fill goose down delivers superior insulation with minimal weight. It's designed to put warmth right where you need it while allowing you to move freely. VENTILATION Laser perforations between the down baffles allow excess body heat to escape, keeping just enough warmth in while letting moisture out. PACKABILITY The vest can pack into the reflective zip back pocket when it's not in use. A hand strap makes it easy to carry while running. MORE BENEFITS Dri-FIT mesh shoulder panels help you stay cool, dry and comfortable Elastic binding on the armholes and hem for a secure, comfortable. Vest may contain dark goose feathers.