Caliban Italian Luxury Menswear, Luxury Shirt Making Experts. Last Stock!! Size: 17.5/44 Tag , Slim Fit , Cannot Be True Xl, 44us Size Recommended As American Large Size Regular Fit , Regular 52/42us Suit Gents To 43us Great Fitted By Model Wearing Regular 52/42 Suit, 43 Measurement Approx. Shoulder Seam To Shoulder Seam " Under Armpit To Under Armpit " Sleeve(From Shoulder Seam To Cuff End) Inch Length (From Back Lower Collar Part To Bottom)