I ordered xl and I'm glad I did because Dickies seems to run smaller than other unisex scrub sizes. This shirt was tight across the chest, which is my number one pet peeve with uniforms. Buy bigger to accomodate the chest and end up getting a giant rift down the middle to gap open. The color faded after several wash and irons which really bothered me but the price was good so I didn't sweat it too much.