Enjoy ultimate comfort and the science of style with this Synrgy Performance dress shirt. The brrr° Triple Chill Effect™ cooling technology has three unique cooling effects that work together to immediately and continually reduce the temperature of your skin and wick away moisture. Lab tested and proven to keep you cooler, it lasts for the life of the shirt because it’s permanently embedded in the yarn. Designed at DXL with precise proportions and the perfect Big and Tall fit, it ensures freedom of movement and keeps you dry and comfortable all day. The collar even expands up to an extra half inch for additional comfort.