Gore Women's Essential Tex Active Shell Jacket Gore-Tex Waterproof Fabric - Made from the lightest, most packable fabrics without sacrificing durability, extreme breathability, or weather protection. Mesh Ventilation - Allows moisture and heat to escape, promoting breathability and keeping you comfortable. Adjustable Collar - With easy-to-operate cord stopper for one-handed use for when you are running and don't have much time to undo. Partial Mesh Lining - This mesh helps to promote breathability, keeping you fresh and cool during exercise. Mesh Pocket with Zip on Back - Includes a key-security karabiner and an integrated mesh mobile pocket to ensure your valuables are stored securely.