This chair mat is designed exclusively for hard floors, not carpets. It stays flat without curling, resists fading, has no strong odors. The upgraded anti-slip back uses an adhesive material that grips firmly to hard surfaces without leaving sticky residue behind, keeping the mat in place while preventing curling. It protects hard surfaces like hardwood, tile, laminate, linoleum from scuffs and wear from chair wheels, while also cutting down on rolling noise so late-night work or gaming won t disturb others. The two-tone gray weave combines fixed proportions of gray and white polyester to avoid a flat, dull solid gray look, adding a polished touch to your office space and resisting everyday dirt buildup. Available sizes: 48"" x 36"", 55"" x 35"", 55"" x 63"". Available colors: 1-pack Transparent, Crystal Clear, 1-pack Corduroy Lightgrey, 1-pack Dark Grey, 1-pack Light Grey, 2-pack Light Grey, 2-pack Rubbergrey, Corduroy-blue