This summer I ordered this tee as an X-Large and I am slender, stand at 5' 10". It fits well, hangs nicely, and does not feel tight anywhere on me. I wash it in cold water and let it hang dry. This tee is not a thick fabric, but very light and easy to wear especially in hot and humid weather. I really like this tee because I have always been a fan of Bruce Lee and I have been in Tae Kwon Do for over 20 years.