Stackable green islands allow users to adjust the height of the island by changing the number of pieces used, giving children different walking and jumping experiences.Unique protruding patterns give users appropriate stimulation to the sole of the feet; each side of the bridge provides a different kind of balance training. Flat and curvy bridges can be connected to create numerous combinations which are suitable for different age groups.Water-Lily is made of resilient plastic materials, which can reduce the pressure on user's knees while walking or jumping on the system. Anti-slip designs are featured a the bottom of the components to ensure safety. ? The curvy bridge can be used to construct a humpback bridge or a reverse humpback bridge, allowing children to practice the actions of walking or crawling up and down, to enhance their physical coordination, dexterity and balance developments. ? The sole stimulation provided by surface patterns on bridges and islands can help users stabilize their emotions and enhance their concentration and learning abilities. ? The process of making changes in island heights and creating different path combinations of the Water-Lily system can help children cultivate spatial concepts and improve their action planning and problem solving skills. ? The enjoyable imaginative games and pretend play with the Water-Lily can promote peer interaction and help children increase their confidence.