This wonderful little train set is great fun for adults and children alike. The assembled track makes an oval approximately 22" x 10". Included is a caboose, coal car, cargo car, working locomotive (all varying between 2" to 3.5" long) and a 12-piece oval track set. They're made of a durable plastic and they are all conveniently tucked away in a 5.5"w x 2.25"h x 4"d tin. Perfect for travel, camping, and those trips to Grandma's. The locomotive is battery powered (requires one "AA" battery which is not included). It's loads of fun, easy to assemble and easy to clean up! Recommended for ages 8 and older.