Spark your child's imagination with the HABA Kullerbu Marble Track Playset! This 33-piece STEM ball run toy is the perfect educational building set for toddlers 2 years and older. Watch as the colorful marbles zip and zoom through the exciting ball track, teaching kids about gravity, speed, and cause & effect. Develop fine motor skills and spatial awareness while creating endless marble roller coaster tracks. Made with durable beech wood and plastic, this top-quality toy set is built to last through endless play sessions. The Kullerbu Marble Track Playset is Montessori-inspired and perfect for young explorers looking to learn through play. Give the gift of learning with this engaging toy that promotes STEM learning and sparks creativity and problem-solving skills. Create hours of entertainment and fun for kids ages 3-5 with this exciting marble run building set. Get your hands on the top gift for 4 year olds and watch as your child explores the world of STEM through play!