The Climate Shirt is a lightweight yet warm mid-layer. With sweat-wicking, structured and woven fabric and easy-on, easy-off design features, it's perfect for pushing the pace during your cold-weather workouts. Fit & Design: The Climate Shirt utilizes woven fabric with a multi-dimensional surface structure for superior wicking and moisture management Darts located at the elbow and back allow the Climate shirt to seamlessly curve and contour to your body A thumb hole for all-over coverage Reflective details for low-light safety A side pocket for essentials The quarter zip closure running through the Climate Shirt means it's easy on, easy off