When your job screams you can't handle this, it's time to gear up with the Extreme Hybrid Sweatshirt. Performance-Flex on the elbows gives you unprecedented freedom of movement for such a warm sweatshirt, allowing you to tackle any job, even in frigid temperatures. The Extreme Hybrid Sweatshirt is ready to work. Just like you.The entire Extreme Collection was designed for comfort, style, and the ultimate protection. When the cold warns you to stay at home, take it to the Extreme. Sizing Instructions: For the most accurate fit, take your measurements over the base layer of clothing you intend to wear with this RefrigiWear gear (such as thermal underwear, jeans or a sweatshirt) and refer to the size chart for this product.