The shirt is indeed a little oversized as others have pointed out. I bought it for running as I'm always looking for a good running shirt that absorbs sweat. I sweat a lot so every shirt I wear gets wet but Solar Chill 2.0 has taken that to the next level. It's 100% polyester and maybe with a woven and sun protection quality, it also retains moisture - I didn't absorb moisture at all and it's more of a moisture insulator than a moisture wicking shirt. I give this.