bicycle children's mountain bike men's and women's teenagers 6-8 years old 101220 large and medium primary school students bicycle speed change

single speed-black and red version [standard]] single speed-black and blue version [standard model] single speed-black green version [standard]] single speed-white and blue version [standard]] single speed-white and pink version [standard model] single speed-dazzling color version [standard]] single speed-sapphire blue version [standard model] single speed-bright silver edition [standard model] variable speed-black and red version [standard model] variable speed-black and blue version [standard]] variable speed-black and green version [standard model] variable speed-white and blue version [standard]] variable speed-white and pink version [standard model] variable speed-vibrant color edition [standard model] variable speed-royal blue version [standard]] variable speed-bright silver edition [standard model] disc brake-single speed-black and red [standard]] disc brake-single speed-black and blue [standard model] disc brake-single speed-bright silver [standard]] disc brake-variable speed + black and red [standard]] disc brake-variable speed + black and blue [standard]] disc brake-variable speed + black and green [standard]] disc brake-variable speed + white and blue [standard]] disc brake-variable speed + light pink [standard model] disc brake-variable speed + vibrant colors [standard model] disc brake-variable speed + royal blue standard model]] disc brake-variable speed + bright silver [standard model]

rui-18-inch suitable for height 115cm-125cm rui-20-inch suitable for height 130cm-150cm rui – 22-inch size is suitable for heights between 140cm and 160 cm. rui-24-inch suitable for height 150cm-170cm rui – 26-inch size is suitable for heights between 160cm and 180 cm.