The liners have not been molded. My son wears a mens 6-7. The best way to check for Mondo size is to put your foot on a piece of paper, draw a line at the tip of toe and the heel. Then measure in cm. Mondo 25 should fit between 24-25 cm.
My son used it for training and racing slalom when he was 80-90 lbs and about 4 ft 8 inches - 4 foot 10 inches tall. We couldn't find a slalom board short enough for him so we had to custom make a short board with Donek.