Size of one piece: 30cm x 30cm Gray: 10 pieces White: 6 pieces Cream: 9 pieces Total: 25 pieces Used for about a year. They were placed on the flooring of a children's playroom, and a rug was placed on top. There are some small scratches and dents on a few pieces, but I think they are still in usable condition. All pieces have been wiped with disinfectant wipes and home cleaned.