Not traditional sizing. The size is the actual length of the slipper. Be sure to measure. Bundle 3 purchased listings, get 50% off Any bundle of 1 or more purchased listings - add up to 3 FREE items! (from the free section at the bottom of my closet - before sold items) Will adjust price at checkout. If you are new here - use my code: MALIKADUDLEY for a $10 credit on your first Poshmark purchase! Happy poshing!