It fits tight, but that's the way a compression shirt should fit! I wish I had these shirts a long time ago! These things are a lifesaver for me! I work outside all day and the summers in Southern California can be brutal for people who work outside! This shirt not only helps prevent chafing and rashes, but also keeps me cooler. At first I was a little skeptical due what I would consider a fairly high price, but believe me, they are well worth the price! I ended up investing in enough of these shirts to wear throughout the whole week. I use them as undershirts now, instead of wearing cotton undershirts like I used to. I can honestly saw that these shirts are one of the best purchases I've ever made! Get some!