UA Microthread technology in the fabric dries faster, wonât cling to you, wonât chafe & stretches without absorbing sweat. Ergonomic design keeps seams off high abrasion areas & increases durability. Mesh underarm panels for strategic ventilation. 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. Shaped hem. Sublimated graphic.