The best-selling Vigor Collection is your guaranteed ticket to layering intuitively and effectively for cold weather adventures. Thermo-regulating ActiveTemp works hand-in-hand with Vigor's grid fleece fabric, which wicks sweat and allows total breathability when you're gunning it uphill. Whether you're wearing it as a midlayer for sub-freezing days, or an outer layer for mild temperatures, take on each adventure with Vigor.Learn more about ActiveTemp technology right here.