On Zero Jacket – White Ultralight and highly packable, the Zero Jacket is designed to provide reliable protection in unpredictable conditions. Its windproof construction and water-repellent surface help shield against the elements, while maintaining breathability for high-output efforts. The lightweight fabric ensures unrestricted movement, enhanced by a spiral dart elbow construction that supports natural mobility. An integrated pocket allows the jacket to be easily packed down, making it a practical layer to carry on any run. Reflective elements improve visibility in low-light conditions, while the close, true-to-size fit delivers a streamlined silhouette. Details Lightweight and breathable construction Windproof and water-repellent protection Packable design with integrated pocket Spiral dart elbow construction for mobility Reflective elements for visibility Materials Main: 100% Polyamide Underarm: 95% Recycled Polyamide, 5% Elastane Fit Close fit True to size
