Insanely soft, smooth fabric for total comfort. Shoulder fabric uses UA Microthread technology so it won‘t cling to you, won‘t chafe & it stretches without absorbing sweat. 4-way stretch construction moves better in every direction. Material wicks sweat & dries really fast . Anti-odor technology prevents the growth of odor-causing microbes. Low-profile thumbholes . Media port at neck. Reflective logos for greater visibility on low-light runs.