The On Running Climate Shirt in Black is a lightweight, versatile layer designed for running, hiking, or cool-weather walks, offering warmth when it’s cold and breathability when temperatures rise. Its woven fabric with a multi-dimensional surface efficiently wicks away sweat, while the quarter-zip closure allows for easy on and off. Designed with spiral elbow darts, a contoured back seam, and thumb holes for enhanced coverage and mobility, it also features a side zip pocket for essentials and reflective details for added visibility.