The tracks could be built in anyway as the children imagined it is easy to build the road no tools requires. The battery-operated car races around the track fly around curves race over bumpy road surfaces under and over the bridge Main feature: This tracks toy set has interactive role-play features include an electronic train station bridge and tunnel Training child's ability of logical thinking creation observation and imagination Good for recognize colors and shape of kids and parent child interaction Powered by ( car ): 1 x AA battery ( Not included ) Material: ABS Age Range: > 3 years old Battery: 1 x AA battery ( Not included ) Features: Battery OperatedEducational Gender: Unisex Package weight: 0.6 kg Package Contents: 1 x Set of Racing Block 1 x Car 1 x Tag