For rugs on all hard surfaces, with added cushion for comfort underfoot and to prevent pile crush. Made of polyester fabric coated with a special poly-vinyl compound. It will not stain, discolor, or stick to flooring or rugs. Holds rugs safely in place. Makes vacuuming easier. Protects your floors and rugs. Mold and mildew proof. Flame retardant. Easily cut with household scissors to custom fit any size or shape rug. Hand washable, air dry flat. Guaranteed 10 years.