The evolved Weather Shirt is engineered for insulating protection from the elements without adding bulk or weight. Ideal for cold-weather training. Technology Weather-defying details The Weather Shirt is engineered for performance and comfort in cold conditions. While technical fabrics handle the temperature, the thumbhole cuffs help keep your hands warm and your sleeves where they should be. There's no rolling them up to check your pace either – the watch window puts your smartwatch stats on show while keeping the chill out. Reflective details add visibility after dark. Materials Forward-thinking warmth The blend of polyester and lyocell makes the next-gen Weather Shirt warm, soft and light. With analysis showing us that women lose a lot of body heat from the torso, we added a wool-blend front panel for extra insulation. Moisture wicking as well as warming, the fabric of the Weather guarantees stay-dry comfort. Design Clever beats cold We made the Weather Shirt to take the guesswork out of cold-weather training. It’s the top you reach for as soon as there’s a chill in the air. Clever fabrics provide warmth as you get moving and then keep you dry and comfortable as you pick up the pace. So when the temperature drops, your performance doesn’t have to. Specs Athletic Fit. Fits true to size. Materials: 79% Polyester, 21% Lyocell Best For: Cold-weather running, winter training, changeable conditions. Weight: 7.44oz/211g