Closed chain cover design concealed brake line to prevent hooks make the appearance more concise provide safety protection for the baby and ride safer. Safely set the double disc front disc brake rear disc brake safety brake brake sensitive easy to master and safer to ride. Manufacturered by YUMEIGE. 20" size red blue orange bicycle sensitive shifting system 7-speed with a tripod long service life. Easy to piece together! 95% of the bikes have been assembled and the handles seat cushions auxiliary tires and pedals can be installed in just 4 steps.EASY ASSEMBLY This bike comes 90% assembled. The seat post and and the handlebars need to be inserted and tightened and the pedals need to be installed. Complimentary tools help finish the job within 30 minutes. High carbon steel frame carbon steel hot processing and cutting performance good comprehensive performance environmentally friendly paint design high load bearing can withstand inspection.