I ordered these shirts for all of our employees. Generally, we order the standard Gildan t-shirts due to their quality and they hold up well. I ordered these as another option for our guys. They are very light weight & breathable on warm days to shield your skin from the sun, and they also wear them layered under a hoodie on colder days. I would say the shirt mad be a tad loose, but the material is clingy & not so forgiving if you have anything to hide. You may opt to size up, but I felt the medium was a little larger than normal, but it is honestly works wonderful with this fabric. For reference I am 5'7 & 160lbs & the Medium fit me perfect. The quality of these shirts is unbelievable! They're so soft, lightweight, & they are amazing for sublimation! Will be ordering again.