Quadrilla – The Luge Add-On “S” Curve Pack Extend the fun of any Quadrilla marble run with two extra curved runway tracks. Durable child safe paint finish and solid bamboo and wood construction are hallmarks of Hape toys. Hape’s 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.