My husband is 53 tall and 130-135 lbs ( he doesnt have a notorious belly, nor a six pack abdomen). He always buy & wear small size shirts, unless the T-shirt shrinks (like Hanes cotton t-shirt) so in this case he prefers to buy a size up.
Well this t-shirts are great for the price, but they run somehow small (body fit cut maybe) on the shoulders area they are perfect and comfortable, but its slightly fitted from the chest to waist.
Im returning these (small) and getting a size up (medium) even dough I think is going to be little long to him