Please read carefully before purchasing Product Description: √. This is a 12 inch small lightweight folding bike suitable for simple commuting and cycling for adults and teenagers  √.The weight of the entire vehicle can reach 200 pounds and the height is 180 centimeters. Please choose based on weight and height  √We do not supply any free assemble for the bike, and, we didn't cooperate with any local bike shop that can supply free assemble.  √. Due to transportation requiring us to complete 85% of the assembled components, you can proceed with the remaining installation according to the product manual after receiving the goods, If you have any questions, please contact XINLucky Star customer service. You can also consult customer service for product installation videos