Measurements are approximate and taken while laying flat across the front. Not doubled.
x-small: waist = 12.5"; length = 37"
small: waist = 13.5"; length = 37"
medium: waist = 14"; length = 37"
large: waist = 16"; length = 37"
x-large: waist = 17"; length = 37"
xx-large: waist = 18.5"; length = 37"