Customized long sleeve casual shirt by Proper Cloth in Extra Light Wash Indigo Twill. The person this shirt was made for usually wears a 17.5 neck size. There is a light mark on the collar, see photos for details Full measurements: Neck: 17.5 inches Center back length: 31 inches Center front length: 29 inches Flat chest measurement (across): 23 inches Sleeve length (from shoulder seam): 27 inches Shoulder: 7 inches