The description says it is a sweat-wicking t-shirt. Moisture wicking means sweat needs to be wicked away from your body to keep you dry. I received it and washed it in cold water before putting it on and this is what it looked like in the washing machine when wet. Very wrinkled and there is no tag to indicate the material but I think it's just cotton. Cotton doesn't absorb moisture and becomes a mess when you sweat. It doesn't cost $13.85, be careful.