Because basic cotton tees are for the minor leagues.
The Burton Dwight Henley Tee is batting over .300 with its cotton/poly blend. With a slim fit that shows off what you're working with, contrast sleeves, and a Henley placket, this is one tee that won't be riding the bench this season.
Cotton/Polyester Blend Henley Placket Contrast Sleeves Slim Fit