As with all Penguin Items , size can mean different things , this is an XL according to the lable and that`s pretty accurate given it`s a Heritage FIT  , there are measurements below so you don`t have to guess , please compare them with a shirt you KNOW fits you ok !  Good condition , just normal signs of use only so NOT new !!......  and from a non smoking household . It has a 38" chest . It is 21" long from the top button to hem at the front . It is 26" from the top of the rear collar to the hem at the rear . It is 16.5" shoulder point to shoulder point . 100% cotton . Machine washable . Free UK P&P ( costing me £4.60 )