... roller brakeParking brake:Easy hard operation in both stroller and tricycle modesWheels:16”wheels,single side hub ... hardness:5point extra stronge harnessSeating position:2positions in stroller mode,2positions in tricycle modeTricycle dimension(cm):73W ... 20-29kg/44-64lbs,denpends on configurationConversion time:20secondsFabric:Removable for easy cleaning,water proof and non-flammabeAccessories: ...