I ordered a size up (I'm usually a medium) and the shirt fit a little loose, which is how I like it. Unfortunately it came with a slit near the top right collar area. I didn't notice it until after I wore it because my long hair had covered it up.
I bought these shirts to accompany the tough mudder passes I bought my husband and son's. Shirts look and feel like good quality and I can't wait for Christmas morning when they open their shirts and passes!