Small fits approximately 28" - 32" waist. 12.5" Rise x 30" Inseam 

Medium fits approximately 32" - 36" waist. 13.5" Rise x 30" Inseam

Large fits approximately 35" - 38" waist. 13.5" Rise x 30" Inseam 

XL fits approximately 37" - 40" Waist. 14.5" Rise x 29.5" Inseam