If the product you received has any quality problems, please do not hesitate to contact us to return it. Worry-free return, 24 hours online, rest assured to buy. Super Value Pack- 1 x Toy Train Engine, 2 x Domino Sleeve, 80 x Domino Block, 80 x Sticker, 4 x Traffic Sign. You just need to use 2 AA batteries (not included) to operate the locomotive, super fun for your kids to play. Easy to Operate- You can let your kid use the sticker sheet to make every piece of domino symbolic. Then put the dominoes into the sleeve and insert the domino sleeve into the purple slot. You can change the train's route by switching the green botton on the train. Full of drama and creativity. Safe Quality- Made of plastic, odorless and nontoxic, circular arc edges, no burr, smooth finish, firm and durable. Passed a rigorous testing and certification process, 100% children-safe. Cautions: chocking hazard! Adult supervision required for children under age of 3. Warm Notice- Our super domino laying train toy is not recommended to place other wooden domino blocks. During use, it is recommended to correctly place the domino blocks in the domino sleeve to prevent the domino blocks from getting stuck. Also if the accessories are damaged during transportation. if you are mind , it is recommended to return the product.