Ideal for uneven surfaces this non-slip rug pad adds extra cushion protects wood floors and promotes the longevity of your rug. It reduces puckering under furniture and can easily be trimmed to fit. It is CRI Green Label Plus certified ensuring it meets the most stringent criteria for low chemical emissions. Intended for indoor use only. For radiant heated floors use felt side down. - Product Details provided by Manufacturer, Slumberland not responsible for errors in information.