An exicting crawling challenge! Form a colorful chain of caverns with four decorative shapes. Flower, square, flame and castle portals create an enhanced environment, adding more fun to exercises and games. Can be used in a variety of configurations for crawling, jumping , socialization, follow the leader and more. Fun activities for individuals or groups of children to develop motor skills. Made entirely of sturdy, flexible foam. Kit comes complete with 4 main designs and 56 supporting components. Waterproof and easy to clean. Use under adult supervision.