Size (US) WAIST (US ) Thigh Knee Leg Opening
28W 30 11.5 7.75 6.75
29W 31 11.75 8 7
30W 32 12 8.25 7.25
31W 33 12.25 8.5 7.5
32W  34 12.5 8.75 7.75
33W 35 12.75 9 8
34W 36 13 9.25 8.25
36W 38 13.5 9.75 8.75
38W 40 14 10.25 9.25
40W 42 14.5 10.75 9.75