Under Armour Storm Run Packable Jacket ColdGear Infrared Technology - Thermo-conductive inner coating helps to retain body heat. DWR Finish - Repels water without sacrificing breathability. Mesh Underarm Panels - For strategic ventilation. Adjustable Bungee Cord Hem - Allows the wearer to personalize the fit of the garment. Secure Left Pocket - With internal headphone port.