Advanced Expansion PackPerfect for the creative toddler Expand your budding engineer's collection with this amazing Advanced expansion pack wooden train track accessory. A perfect expansion to extend and create new layouts. BRIO Trains, Engines, Wagons, Carriages, and Vehicles feature the classic BRIO magnetic couplings for easy hook up! All train sets, rails, accessories and destinations feature the classic wooden train track allowing for easy connection to each other and