“Bought this as a Christmas gift for my 6'2"/6'3" brother to branch out the colours of his wardrobe and because I figured that he'd like the sweater. Based on past purchases and the sizing guidelines, large tall has usually worked out well for his 38/39 sleeve. To my surprise this shirt has yet again proven to be longer than expected, which I call a happy accident. But this ended up being a 42 sleeve! So that's why I gave it a 4 star score. But if he folds back the 3" cuff, it will end up being a 39 sleeve, so it will guaranteed fit him, so it's all good. The colour looks great too and it's a nice weight and the weave of the fabric looks good, and I am still looking forward to giving it to him. Thanks again American Tall. . Stay safe and stay awesome. ✌️”