Approx. Measurement in inches.
Size------------waist-------------------------Insteam
M-------------30-32 inches-----------------------28inches
L--------------32-34 inches-----------------------27.5"
XL------------34-36 inches-----------------------29.7"
2XL-----------36-38 inches-----------------------30.5"
3XL-----------40-42 inches------------------------31
4XL-----------42-44 inches------------------------32
5XL------------44-46inches------------------------33
6XL------------46-48inches------------------------34