4XL - Short sleeve polyester shirt. 5.3 oz 100% polyester twill interlock featuring UltraCool (R) moisture wicking technology. Wicks away perspiration to increase your comfort under warmer conditions. Accented with contrast flat piping and mesh panels along sides and sleeves. Rib trim along front neck. Easycare - easy wash and wear with machine wash and tumble dry. Tagless - features heat transfer label for greater comfort.