My husband is a slim 6' 6" guy and ordinarily he would order a large tall and that would be his perfect fit. However they are hard to find so originally ordered the x-large which sometimes will work. However the x-large were truly x-large, way too big for him. So we reordered the large, they fit perfectly and then as suggested did the washing. I washed them in cold water and dried them on low for less than 10 minutes and then air dried them. There was still some shrinkage but not too bad. They are not a perfect fit, could be a tad longer in the inseam and the sleeve length but we are keeping them as we like the material and color. Next time I wash them I will try to stretch them while wet and probably air dry them. That sometimes seems to help with other items.