Nature requires a delicate balance, and so does this simple game featuring 15 endangered animals. Stand the boat up on its edge and see how many of the animals you can put on it without upsetting the balance. There is no one correct solution, so this toy offers many hours of engaging, challenging fun. The pieces are made of eco-friendly rubber wood with water-based stains that will not chip or flake off when the pieces are dropped. The set comes in a storage tray measuring 31 cm x 34 cm (about 12.5" x 13.5").