Built for a variety of training conditions, this legendary tee features Dri-FIT technology to wick away sweat and help keep you dry. - Made of 4-ounce, 100% polyester jersey. White is 4.5-ounce, 100% polyester jersey. - Neck tape for durability. - Heat-transfer label for tag-free comfort. - A contrast heat transfer Swoosh design trademark on left chest. - Contrast heat transfer Dri-FIT logo at right hem. - Size Chart