BLOCKS UNDERARM SWEAT FROM SHOWING - Innovative underarm sweat block zones are designed to protect shirts against underarm sweat. VALUE PACK - This 3-pack of underarm sweat blocking tees offers outstanding performance at a price point way below similar shirts. SOFT & BREATHABLE - This premium 100% cotton crewneck tee feels great against the skin. (Underarm sweat block zones are made of 100% polyester.) STAY COOL, STAY FRESH - Moisture-wicking fabric keeps you feeling cool, while odor control technology helps you stay fresh - no matter how tough your day is. MADE FOR LAYERING - This crewneck t-shirt features a lay-flat collar and stays neatly tucked in for a clean finish, layering nicely beneath a dress shirt or polo. TAGLESS - So there’s no need to worry about scratchy tags bunching up.