Made with open cell natural rubber, Rubber Anchor’s comfort, resilience, performance in protecting against rug wear and preventing slipping on both wood and tile floors is unsurpassed by any other rug pads. Rubber Anchor’s smooth surface eliminates the possibility of texture showing through even the finest rugs. Rubber Anchor II was designed to enhance all the qualities of Rubber Anchor. Not only is it 40% lighter in weight, it is tougher, springier, grippier and longer lasting. The finest area rugs deserve the Rubber Anchor. For both on hardwood and wall to wall floors.