XS S S/M M M/L L L/XL XL 2XL 3XL 16 17 18 18.5 19.5 21 22 23.5 25 26 27 27.5 28 28.5 29.5 30 31 31.5 32 33 33.5 34 35 35.5 36 36.5 37.5 38 38.5 39 40 40.5 41 42 42.5 43 44 44.5 45 45.5 46 47 47.5 48.5 49.5 One Size