Built for cold weather running, the women's Diadora Warm Up Winter Sweat Be One ensures you can warm up quickly and stay that way through your entire workout. Diadora designed this half-zip running shirt with pockets, built-in mittens with thumbholes and reflective details—everything you need to run in cold weather. Cut from a polyester fabric with a brushed interior, the women's Diadora Warm Up Winter Sweat Be One gives you cold-weather performance and standout Italian style.