I wear a 2XLT and bought a 2XLT.  This fits like a 3XLT maybe even somewhere between a 3 and 4XLT.  They really are big and I didn't get any shrinkage out of them with the first or second wash/dry.  The elbow length short sleeves drop a good 2 inches past my elbows.  Can't complain to much though.  To big is always better than 2 small especially when you're a big guy.