The Gecko Run Starter Set transforms your entire apartment into an exciting playing field! Using residue-free nano adhesive pads, the flexible strips can be individually attached to vertical, smooth surfaces and adjusted with ease in a matter of seconds. Children discover firsthand the impact of gravity on their rolling ball as it gains speed. Whether navigating obstacles, gliding across doors, windows, glass panes, tiles, or shelves, the KOSMOS ball track allows for unprecedented flexibility in construction. Here are the key features of the Gecko Run Starter Set: Sustainability: All tracks are crafted from renewable raw materials, promoting eco-conscious play. Additionally, the marble run is proudly made in Germany. Age Group: Designed for children aged eight years and older.