2'x8' MSM Duo-Lock Felt and Rubber Runner Rug Pad for Hard Floors - Includes RPFL(TM) Rug and Pad Care Guide Duo-Lock is a needle punched felt surface with a textured rubber lower surface to prevent slipping. Non-slip for all rugs and all hard floors. Reversible to keep rugs flat on carpet. Duo-Lock does not mark or stain floors. Actual size 2'x8'. Rug pads should be slightly smaller than rug, see product description for free Rug Pads for Less(TM) custom cutting if necessary Contributes to LEED for a greener environment with no chemicals that out gas. Duo-Lock is Made in the USA - .25 inches thick. Mold, mildew and moth resistant.