phoenix children‘s mountain bike boys 6-8-12 years old middle and big children primary school students bicycle teenagers geared bicycle

gradient purple color-single speed spoke wheel(渐变紫-单速辐条轮) gradient green-single speed spoke wheel(渐变绿-单速辐条轮) matt blue-single speed spoke wheel(亚光蓝-单速辐条轮) gradient purple color-variable speed spoke wheel(渐变紫-变速辐条轮) gradient green-variable speed spoke wheel(渐变绿-变速辐条轮) matt blue-variable speed spoke wheel(亚光蓝-变速辐条轮) gradient purple color-single speed integrated wheel(渐变紫-单速一体轮) gradient green-single speed integrated wheel(渐变绿-单速一体轮) matt blue-single speed integrated wheel(亚光蓝-单速一体轮) gradient purple color-variable speed integrated wheel(渐变紫-变速一体轮) gradient green-variable speed integrated wheel(渐变绿-变速一体轮) matt blue-variable speed integrated wheel(亚光蓝-变速一体轮) gradient purple color-single speed spoke wheel + training wheel(渐变紫-单速辐条轮＋辅助轮) gradient green-single speed spoke wheel + training wheel(渐变绿-单速辐条轮＋辅助轮) matt blue-single speed spoke wheel + training wheel(亚光蓝-单速辐条轮＋辅助轮) gradient purple color-single speed integrated wheel + training wheel(渐变紫-单速一体轮＋辅助轮) gradient green-single speed integrated wheel + training wheel(渐变绿-单速一体轮＋辅助轮) matt blue-single speed integrated wheel + training wheel(亚光蓝-单速一体轮＋辅助轮)

18 inches(18英寸) 20 inches(20英寸) 22 inches(22英寸)