Our Supreme Felt is our highest quality rug pad. Offering superior grip and our thickest cushion this rug pad is an excellent choice to extend the life 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.