THOMAS & FRIENDS MINIS Popular Thomas the Tank Engine Advent Calendar! Includes Icy Thomas and Christmas-themed engines. Includes 6 limited-edition decorated engines. 24 engines 24 ornaments Special rail map Ages 3 and up Count down to Christmas with fun surprises every day! From December 1st to 24th, open a small window to reveal a little Thomas friend each day. You can thread a string through the opened window and use it as an ornament. The package has a special design that resembles a present. The sleeve is a track, and you can run the engines on it.