Dad is usually large but it was too tight. Ordered XL and had that loose fit look he likes. Thin material. Probably not real adidas but looks legitWe are very happy with this shirt! Very, very nice material! Really comfortable. Great shirt to come home to put on after working all day. Really comfortable weekend shirt, and a very nice shirt to wear out, & about. It's one of those shirts that you keep for years, and buy in another color when you find it.Worn around the farm when working too - definitely helps cool you off!We absolutely DO recommend this shirt - for all your uses!&We hope our review is helpful to you!Good oneI do not have a body of a model, i am an oversize person but so far I enjoy the v-neck from UA. Somehow I can not say that to this t-shirt.I love the shirts I received, they fit like a champ. I am 5'4 and weight 145 lbs. I ordered a small and they fit perfectly. I am a skinny guy and sometimes when I order a small especially Nike brands they tend to run longer so it looks obvious when I have running shorts on.The material that the shirt had was very comfortable and did not irritate my skin. GET A PAIR and you wont be disappointed.Good material and well made. A little small around and a little too long for my liking, but most shirts are these days.This shirt fits me well, but it is a little short on the torso. When I go to do an overhead press at the gym, it rides up high enough that my stomach is exposed. When I am lying back to do Ab exercises, often the shirt will shift upwards, again exposing my stomach. It's like I'm constantly having to bother with this shirt to get it to fit me! For reference I am 6'1" 200lbs, broad shouldered.I ordered a men’s small and it was like a child’s large! Disappointed because it was perfect color for pants I had!!Havent really worn it coz its winter but you can expect an update if it causes a problem.Great shirtA++Size fit perfectly ! I really like it !This shirt has about 25 work outs before I become the smelly person at the gym. Even after you wash it.