This training vest will keep you cozy and help you power through cold-weather runs. CLOUDSPUN WRMLBL is our super-soft, heavier-weight insulating fabric, designed to keep you warm. This sleeveless piece also features breathable windCELL technology to defend you from wind chill and maintain a constant body temperature. Finished with reflective design elements, a high neck with full-zip closure, and zip guard, you’ll take cold weather in your stride.