My company just started making us wear plain tee shirts with no writing under our vest. While before we could wear anything non offensive we now have to have plain shirts no pattern at all. Stupid but okay. I bought these because the vest are rather warming so I felt the wicking properties of these shirts would be good if my shirt could not be fun. They do work! My job keeps me running around all day and I am cooler than with an all cotton tee. Thaw clean easily ( my job is also dirty) and don’t shrink. Everything I could ask for within my given perimeters. And they have a comfortable fit. Could not ask for more