Size of one piece: 30cm x 30cm Brown: 15 pieces White: 15 pieces Total: 30 pieces Used for about a year. I used them by laying them on the flooring of the children's playroom and then putting a rug on top. There are a few small scratches and dents, but I think they are still in good condition and can be used. All pieces have been wiped with disinfectant sheets and home cleaned.