This is a Large according to the label , there are measurements below so you don`t have to guess , please compare them with a shirt you KNOW fits you ok . In good clean condition , very small normal signs of use only , perfectly wearable and freshly laundered , and from a non smoking household . No missing buttons  . It has a 44" chest measured around under the arms . It is 27" long from the top button to hem at the front  . It is 32" from the collar to the hem at the rear . It is 20" from the cuff to the underarm seam . it is 27" from the cuff to the shoulder seam . It is 18" from shoulder point to shoulder point . Machine washable . Free UK P&P ( costing me £4.60 )