WANSHIYISHE Men's Pure Color Stand Collar Longsleeve Shirt 100% Cotton Asia Size Unit is runs samll,please go up 1 size than you normally wear on U.S Size, If you are not sure about your size, please refer to the size chart listed below US Large=China X-Large:Length:31.50"(80cm), chest:43.31"(110cm), Shoulder:17.72"(45cm) US X-Large=China 2X-Large:Length31.89"(81cm), chest:44.88"(114cm), Shoulder:18.11"(46cm)