Introducing the HABA Kullerbu Marble Windmill Starter Set, designed for ages 2 and up, it is also the perfect STEM toy for kids aged 3-5. This educational building set features a 25-piece marble run track with special effects and a marble maze for endless fun and learning. Montessori-inspired, this toy fosters creativity and problem-solving skills in young minds. With a dazzling marble roller coaster, unique windmill feature, and exciting ball drop elements, kids will stay engaged for hours. Construct amazing marble tracks with this high-quality building toy, designed for hours of learning through play. The durable construction ensures long-lasting fun, making it the ideal choice for kids who love marble games and building toys. Get ready for an exciting marble run experience with the HABA Kullerbu Marble Windmill Starter Set - the top gift for 4 year olds and a must-have STEM toy for kids ages 3-5. Order now and watch your child's creativity soar!