Store the loads inside the box car. An exciting feature for little train drivers who like to explore and hide things away. Attach to any BRIO wagons or engines and let the imagination set the destination. Brio Wooden Railway is compatible with Thomas Wooden Railway, Chuggington Wooden Railway, Melissa & Doug Wooden Railway, and Bigjigs® Wooden Railway! Mix and match to expand your fun! See our compatibility page for more details.