Im 1.80 athletic build and I had bought the XL based on the size chart but it was way too small so returned it for an exchange to the largest size. The customer service was super friendly, very efficient and knowledgeable in helping me and I essentially had to do nothing. Plus I got a discount. Only two points of criticism are that the sleeves are rather short even with maximum size plus I had to.wait a month for my exchange to arrive. However I like to think this was just bad lack so I will silll leave five stars! Im 1.80 athletic build and I had bought the XL based on the size chart but it was way too small so returned it for an exchange to the largest size. The customer service was super friendly, very efficient and knowledgeable in helping me and I essentially had to do nothing. Plus I got a discount. Only two points of criticism are that the sleeves are rather short even with maximum size plus I had to.wait a month for my exchange to arrive. However I like to think this was just bad lack so I will silll leave five stars!