What is important is that the size (should) be taken into consideration.
2:Make sure it fits firmly but is comfortable at the time。
確保牢靠，但同時要舒服3:Check the air in the tires as well。 也要看看輪胎是否有氣4:以便始終都能看見。So that it / they can be see all the time. 5:Use hand signals so that people can be aware of where you are going。使用手動信號/手勢，以便人們知道妳去哪裏。