Durable, Reversible 4' X 6' SUPREME HOLD(TM) Felt/Rubber Rug Pad adds PREMIUM PROTECTION on Hard Surfaces and Carpet Premier, reversible non-slip rug pad designed for hard surfaces and carpet. Rubber side down for hard floors, rubber side up on top of carpet Prolongs the life of your Area Rug; Adds Cushion Underfoot; Keeps Rugs Securely in Place One surface 100% Natural Rubber; One surface 100% Recycled Felt Low VOC (meets or exceeds Carpet and Rug Institute Green Label low emission standards); Hypo-allergenic; Satisfies credit requirements for USGBC LEED Rating Systems SUPREME HOLD(TM) Rug Pads are guaranteed not to mar, stain, or discolor floors or carpet for 15 years