In the most simple terms, pile height refers to the length of the yarn that extends from the backing of the rug. High pile rugs like our Shag or Plush rugs have long filaments that extend from the base of the rug, contributing a soft and luxurious feel. Our Tufted Rug Cover has a medium pile height, which balances comfort and versatility. Our Flatwoven Rug Cover has no pile extending from the rug backing, and is most optimal for high traffic areas.