Marked size: 63, but the waist can be adjusted with a drawstring, so it should fit up to a size 11 (Japanese size). Measurements: Waist: 70 cm Hips: 93 cm Length: 72 cm (This is the measurement after the hem was hand-sewn) 97% Cotton 3% Polyurethane There is a 23.5cm slit in the center of the back hem. It's not flimsy, but a slightly firm cotton material with stretch, so it should be comfortable to wear. It's a fairly old item, but I haven't worn it much because it's the wrong size, so the condition is good.