Measurements are approximate and taken while laying flat across the front. Not doubled.
small: waist = 13"; length = 30"
medium: waist = 14"; length = 30"
large: waist = 15"; length = 30"
x-large: waist = 17"; length = 30"
xx-large: waist = 18"; length = 30"
xxx-large: waist = 19"; length = 30"