Thigh Circumference 1″ Below Crotch 31 33.25 35.5 37.75 40. Knee Circumference 13″ Below Crotch 25 26.4375 27.875 29.3125 30.75. Front Rise from Waist Top Edge 12.5 13 13.5 14 14.5. Back Rise from Waist Top Edge 18.5 19.5 20.5 21.5 22.5.