Deflecto FashionMat Black Diamond Chair Mat - Home, Office, Classroom, Hard Floor, Pile Carpet, Dorm Room - 40" Length x 35" Width x 0.050" Thickness - Rectangular - Black Diamond - Vinyl - Multicolor - 1 / Carton The FashionMat Black Diamond Chairmat complements your sense of style while safeguarding surfaces from wear, scratches and spills. Strike a visual balance with its simple yet bold pattern to create a pattern that's hard to ignore. Protective, easy-glide mat made of printed laminate vinyl perfect for home, office, classroom and dorm use. Phthalate-free chairmat is designed for hard floors and flat-pile carpets up to 1/4" thick.