Note: the following dimensions show the size of the pants. You could measure your similar pants then compare to this size chart to choose the best fit size.
Size Chart(Unit:inch)
28Wx30L:Inseam: 30”—- Front rise: 9.5”—-Thigh: 20.5”—-Leg opening: 12.0 ”
30Wx31L:Inseam: 31”—-Front rise: 10.0”—-Thigh: 21.0”—- Leg opening: 12.5”
32Wx31L:Inseam: 32”—-Front rise: 10.5”—- Thigh: 22.5”—- Leg opening: 13.0 ”
34Wx32L:Inseam: 32”—- Front rise: 11.0”—-Thigh: 23.5”—- Leg opening: 15.0 ”
36Wx32L:Inseam: 32”—-Front rise: 11.0”—- Thigh: 24.5”—- Leg opening: 15.0”
38Wx32L:Inseam: 32”—-Front rise: 11.5”—- Thigh: 25.5”—- Leg opening: 16.0”
