Benesse Kodomo Challenge Animal Balance Puzzle, 2-piece set. The one used by the older brother has signs of use and no instructions. The one used by the younger brother has the instruction sheet and is in good condition. This popular educational toy lets children stack cute animals while developing a sense of balance, concentration, and imagination. With two sets, siblings can play together, or one child can stack a lot! All pieces are present, so you can enjoy playing with them.