"ECO-FRIENDLY AND SAFE for Early Educational Toddler/Baby: The toy train set is made of non-toxic plastic which meets the US safety standardard CPC.It's safe for baby kids even they put it in mouth.360smooth body and no sharp corners ensure it 100% safe even without parental supervisionNO BATTERY REQUIRED:2 Rear-wheel drive,gently push the friction train forward or backward,you can travel a long distance without a battery.Children can play freely and safely wherever they want to go,like the children's construction site,playroom or the sandbox ectCUTE AND INTERESTING DESIGN: Each toy train is convenient for baby to grasp.Small drivers are included but cannot be taken apart.No small detachable pieces.The chimney could goes up and down when the train moving on.The engineering vehicles can help children learn colors,vehicle types and functions;promote baby's hand-eye coordination,sensory perception and develop imaginationGIFT FOR 9 MONTHS AND UP:The Pull-Back Vehicles Baby and Toddler Toys makes an ideal gift for kids ages 9 months and up.Push and go toys could as easter egg stuffer,birthday gifts,Christmas gifts,early education toys,preschool props,teaching aids etcBUY WITH CONFIDENCE -Each car body is tough and strong.It has impact-resistant, drop-resistant features for children play."