Great fit! Great fabric! This long-lasting running shirt stays with you over the 5ks, 10ks, halfs, marathons and ultras that you run. The most comfortable T around! No annoying scratchy tags at the back of the neck. Smooth, soft, ultra-lightweight ReadyTech Aries fabric performs well over a wide range of weather conditions. This running shirt is perfect for the gym, hiking, and other sports, too. A very popular style for clubs, training groups, and events.