Nevermind the weather. The Climate Shirt adapts to your body temperature, insulating your skin on brisk mornings and airing it as the sun comes out. The special waffle fabric absorbs sweat fast and dries even faster, keeping you fresh and comfortable. Running or hiking. For as long as you can go. Fit & Design: The light fabric is knitted with a 3D effect, absorbing moisture faster than most running shirts Warm in the cold, cool in the heat Four-way stretch fabric, for unrestricted movement Track times in a tick with fiddle-free thumb- and watchholes, without exposing your skin Additional Details: Best for: Cold weather running Made with fully recycled polyester, it's as mindful of the planet as it is you