Cold out Don't miss a run with this warm half zip. Designed for Run. Skims your body:Sits below the waistband for moderate, everyday coverage. Thumbholes and Cuffins keep sleeves down and chills out. Underarm gusset improves mobility and minimizes chafe. Zippered pocket keeps your card and keys safe. Reflective details. This garment was treated with No-Stink Zinc to inhibit the growth of odour-causing bacteria on the fabric.