Safavieh''s Grid pad is for indoor use and is best suited for area rugs placed on hard surfaces. It is made from polyester fabric coated with a high grade vinyl compound allows maximum air circulation through an open weave construction making vacuuming easy. It helps keep tapestries and rugs safe from accidental slipping. It can be easilye easily cleaned by hand-washing in a mild detergent, rinsed, and laid flat to dry.