These mahjong tiles have a beautiful cobalt blue back. Although these are old mahjong tiles, having aged over the years, the condition of the tiles is superb. The material of the tiles is also high-quality resin, the same as that used in automatic tables. The tile size is 26 x 19.5 x 16. These are brand new, "shrink-wrapped and completely unopened." "Color scoring sticks" are also included, making this a great deal.