Size Waist Seat FR Thighs Knees Leg Opening 29 30.5 36 9.25 23 16 15.25 30 31.5 37 9.5 23.25 16 15.5 31 32.5 38 9.75 23.5 16.25 15.75 32 33.5 39 10 24 16.5 16 33 34.5 40 10 24.5 16.75 16.25 34 35.5 41 10.25 25 17 16.5 35 36.5 42 10.25 25.5 17.25 16.5 36 37.5 43 10.25 26 17.5 16.75 37 38.5 44 10.5 26.25 18 17 38 39.5 45 10.5 26.5 18.25 17.25 39 40.5 47 10.5 27.5 18.75 17.5 40 42 48.5 10.5 27.75 19 18 42 44 50 11 28 19.5 18.5 44 46 52 11.25 29 20 19 46 48 54 11.5 30.5 21 19.5 48 50 56 11.75 32 21.5 20 50 52.5 58 12 33.5 22 20.5 52 54.5 60 12.5 34.5 23 20.5