This overshirt is made with the thickest, densest cotton ever for extra warmth. It's knit with indigo-dyed yarns for some color variation aaaand can be worn as a jacket-type of thing in the fall or under another jacket when it's colder. New fabric alert: this is very heavy and dense, because it's meant to keep you warm with a capital W. We used some indigo-dyed yarn in this to give it some color variation. We also do an ozone wash on this, which is an eco-friendlier way of washing down fabric. Basically, we pump air into a big vat and spin it around. It doesn't use any water and still makes your shirt soft, so. Win win. Alex, who starts every day with yoga and a pitaya bowl (you can Google it...we had to), is 6'1 and wears a Medium.