With 140 track pieces, you can decide how big or small you want to build your track. These snap together track pieces can bend in either direction which provides building flexibility. Simply install the 1 "AA" battery in the truck and you are ready to start zipping around the track. Watch out for the T-Rex and Stegosaurus as they could be right around the next curve. Package includes: 140 track pieces, battery operated truck, 2 dinosaurs, boulder, wooden bridge, cage, bridge, 2 sets of slopes & sticker sheet. Requires 1 "AA" battery (Not Included). Ages 3 and up.