Decked out in all its holiday splendor, the Atlas O Yuletide Express Set is a great way to start a holiday tradition. The festive green, red and white 4-4-2 steam locomotive will easily pull the matching heavyweight passenger cars to whatever destination you have. This quality set is designed to make the model railroad experience a pleasure for the newcomer as well as the seasoned veteran. Atlas O trains are compatible with all traditionally-sized O/O-27 trains.