Carpet stair treads provide safety, sound reduction, and beauty. Tiles are manufactured using the highest grade, soil-hiding nylon. Easy-to-install with tack, staple, or glue. Sweep or vacuum to clean. Each tile is 8 In. x 18 In., 13 tiles of the same color in each package, enough to do the average staircase. They are shipped six packages to a case, as many as six patterns/colors to a case (cannot specify). 10 year warranty, copy enclosed.