The size is Chian size, it is smaller then USA size, pleae choose 2 sizes up! Any question please don't hesitate to contact us, will help you to solve problem.
US Medium=China X-Large:Bust39.37"(100cm),Length31.89"(81cm),Sleeve23.23"(59cm),Shoulder15.75"(40cm);
US Large=China 2X-Large:Bust41.34"(105cm),Length32.28"(82cm),Sleeve23.23"(59cm),Shoulder16.14"(41cm);
US X-Large=China 3X-Large:Bust43.31"(110cm),Length32.68"(83cm),Sleeve23.62"(60cm),Shoulder16.54"(42cm);
US 2X-Large=China 4X-Large:Bust45.28"(115cm),Length33.07"(84cm),Sleeve23.62"(60cm),Shoulder16.93"(43cm);
US 3X-Large=China 5X-Large:Bust47.24"(120cm),Length33.46"(85cm),Sleeve23.62"(60cm),Shoulder17.32"(44cm);

• Imported
• China size, smaller than USA size. Please view the product description size measurement before you buy.
• Any questions, please contact us firstly, will give you a satisfied solution.
• We serve our customer with our best products & services.Feel free to contact us with any comments and suggestions!
• US 3X-Large=China 5X-Large:Bust47.24"(120cm),Length33.46"(85cm),Sleeve23.62"(60cm),Shoulder17.32"(44cm)

Imported