Nike brought the Storm-FIT tech and PRIMALOFT Thermoplume insulation to their Windrunner puffer, elevating its warmth, protection, and cold-weather comfort. The matte shell fabric works to shed rain, while the insulation helps to lock in your natural warmth. Stay warm, stay dry and look your best in the elements. Offering a down alternative without sacrificing design and warmth, PRIMALOFT Thermoplume insulation features a blend of water-resistant fibers that deliver insulating loft, wet-weather protection, and compressibility. It's made with small, silky tufts of fiber plumes. Nike Storm-FIT technology resists elements like wind and water to help keep you comfortable in harsh weather conditions. PRIMALOFT insulation helps keep you warm and dry in harsh conditions, so you can keep exploring your city when the temps begin to drop. Chevron design lines are inspired by the Windrunner track jacket from 1978, which is defined by its single and deceptively simple design cue.