Description Measurements are taken laying flat and the back measure is taken under the arm side to side seam and length is measured back neck to hem edge XS back measures 19.5″ and length is 39″ Small back measures 21″ and length is 39″ Medium back measures 21.5″ and length is 40″ Large back measures 22″ and length is 42″ Xlarge back measures 24″ and length is 45″
