M's Base Layer Bottom Size Chart

1-Waist
 2-Hips 3-Inseam 4-Opening
S 14 18.5 27 4.5
M 15 19.5 27.5 4.75
L 16 20.5 28 5
XL 17 21.5 28.5 5.25
XXL 18 22.5 29 5.5
 

*All measurements are in inches and were calculated on flat garments.