Enjoy ultimate comfort and the science of style with this Synrgy Performance dress shirt. Designed at DXL with precise proportions and an ideal fit for Big and Tall guys in a cotton and brrr° polyester stretch blend, it ensures freedom of movement and keeps you dry and comfortable all day. The collar even expands up to an extra half inch for even more comfort and it features unbreakable buttons for durability. Cool to the touch, the brrr° performance cooling technology lasts for the life of the shirt because it’s permanently embedded in the yarn. Lab tested and proven to keep you cooler, the quick dry, temperature-regulating fabric makes it a wardrobe must have.