Pls ignore Amazon Size Chart and refer to our size chart below: S: US34, M: US36, L: US38, XL: US40, XXL:US42, 3XL: US44, 4XL: US46 You also can use flat measurements to get your fit size, refer to the ways on the pic below: Coat chest S: 40'', M: 42'', L: 44'', XL: 46'', XXL:48'', 3XL: 50'', 4XL: 52'' Plague doctor costume, plague doctor coat, pirate coat, pirate jacket, victorian jacket, colonial jacket, steampunk jacket