Encourage children to expand their creativity and engineering abilities! Featuring a giant funnel for marbles to spin around, the Whirlwind Marble Run Add-On Set increases power and excitement, and brings new possibilities of the paths children can build. Combines easily with all of the Hape Quadrilla marble run sets for easy expansion and unique combinations that will enhance your child's play experience. Made with wood sourced from environmentally sustainable forests. Durable child-safe paint finish and solid wood construction make this a toy your child will love for years to come. Hape toys stimulate children through every stage of development and help nurture and develop their natural abilities. All Hape products sold in North America meet or exceed all applicable safety standards. The Quadrilla Cyclone is a proud recipient of the 2013 Oppenheim Toy Portfolio Platinum Seal Award. Keep the good times rolling Quadrilla is the ultimate marble run building set Endless possibilities for 3-dimensional thinking, creating captivating structures Recommended for ages 4 years and up Non-toxic finishes and child safe materials