Hanes Men's X-Temp with Fresh IQ Short Sleeve T-Shirt:60% polyester/30% cotton/10% rayon.X-Temp technology is designed to adapt to your temperature and activity to keep you cool and dry for all day comfort.FreshIQ advanced odor protection technology attacks the odor-causing bacteria in your clothing that causes your t-shirts to smell so now you can feel fresh all day.Banded crewneck, sleeves and hem.All the comfort of Hanes with our famous tag-free neckline.Machine wash cold with like colors; non chlorine bleach when needed; tumble dry medium.