The semi-outer makes heavy use of geometric stitching, using Gramicci's Storm Fleece Technology, which is both water-repellent and windproof. The cut-back of the sleeves is pattern-made according to the movement of the arm, and the box silhouette is finished in a just sizing shape. An inner hood with an interior collar is placed, and when it rains suddenly, the zipper can be opened to protect it from the rain. Perfect for those Fall and Spring 5k runs. Size up for a looser fit.