WAIST - Horizontally, with the waistband buttoned and the front and back lined up, across the top edge of the waistband, from edge to edge. That measurement is doubled.

FRONT RISE - Vertically, along the fly, from the waistband seam down to the crotch seam..

SEAT - Across the front, from the bottom of one pocket opening to the bottom of the fly, then to the bottom of the other pocket opening. That measurement is doubled.

THIGH - Horizontally, across the leg 1" below the crotch seam, from edge to edge. That measurement is doubled.

LEG OPENING - Horizontally, with the front and back hem lined up, across the bottom of the leg, from side edge to side edge. That measurement is doubled.