Pants and shorts are also measured laying flat. The width (A) is taken from hip to hip across the top. We measure the width stretched and unstreched. These two width measurements will result in an average "sweet spot" measurement, which will provide an ideal waist size fit. Keep in mind, elastic waistbands will have more flexibility in what the sweet spot number states. The outseam (B) is taken from the top hip measuring to the bottom leg hem. The inseam (C) is taken from the crotch seam measuring to the bottom leg hem.