XS S S/M M M/L L L/XL XL 2XL 3XL 17 18 18.5 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