6' X 9' Carpenter Memory Foam with built-in DuPont Stain Protection Rug Pad By far the DENSEST Visco-Elastic MEMORY FOAM cushion for the feel under your feet. A full 1/2" THICK pad! Hypoallergenic - ozone friendly (no CFC's) Makes any carpet or rug feel more luxurious under foot. Protects your investment by enhancing carpet performance. DuPont(TM) Hytrel(R) RS renewably sourced(TM) moisture barrier breathable film.