- synthetic- EXPAND YOUR KULLERBU MARBLE RUN: Enhance your child's Kullerbu play system with this 8-piece expansion set for kids ages 2-6, offering endless building possibilities.- CREATIVE STEM PLAY: Encourages imaginative play and coordination skills with versatile track combinations and connection options for hours of engaging fun.- VARIETY OF PIECES: Includes 4 connectors and 4 bases for building upward or lengthening tracks, promoting creativity and problem-solving in young builders.- DURABLE DESIGN: Sturdy construction ensures stability and durability during play, making it a perfect addition to the Kullerbu track system.- EDUCATIONAL TOY: Perfect gift for preschoolers or kindergarteners, combining fun and learning with STEM and Montessori principles for developmental growth.
