We want to make looking good easy, so we've refined our fit—we slightly shortened the body so our shirts can be worn tucked or untucked, tightened the sleeves for a cleaner look and trimmed the fit in the chest. Also, we refreshed our fabric with new brrr° nylon, which has three unique cooling effects—cooling minerals, active wicking and rapid drying—that combine to immediately and continually reduce the temperature of your skin.