Tumi-ishi Balancing Rock Blocks- 16 PiecesSimple stacking game from Japan. Goal is to build a balanced pyramid tower. Each piece is unique in shape, color, and size. Wooden pieces encourage focused play. Promotes perseverance and patience. Exercises hand eye coordination and balance. Helps develop fine motor skills and logical thinking. Fosters creativity, imagination, and social skills. Material: Pine wood with water based paint. Size per piece: about 1. 5 x 1. 2 x 0. 7 inches. Weight: about