The Nike Windrunner jacket gets a new look with water-repellent materials and a collapsible design. Ventilated back and herringbone details keep you cooler as your run intensifies. This product is made with at least 50% recycled polyester fiber. The model incorporates a new stretchy woven fabric with water repellent properties. This stretchier fabric gives you optimal freedom of movement with every stride. The iconic herringbone also serves as a ventilation system to keep you cool. Seams at the herringbone and sleeves keep you focused. The jacket folds into the back yoke when you want to uncover yourself. A shoulder strap makes it easy to take the jacket wherever you go. The slit in the back ensures better airflow as your run intensifies. The adjustable hood offers a custom fit. This product provides UVA and UVB protection from the sun's rays only in the covered areas. To protect areas not covered, the use of a good quality sunscreen is recommended. Fold the jacket over when not in use.