High quality steel Folding mountain bike with dual disc brake and 21-speed shifting system. 26 inch Muti Spoke wheels makes your cycling more safety Free pedals and comfortable seats are included in the package. This bicycle arrives with 85% assembled. You need to install the front wheel, pedals, handlebar, seat and air up the tires.Bike Installation instruction included in the package, if you have any questions for installing the bike and tuning the brake and speed system,please contact seller for assistance directly. Suggested rider height range for  5’4” to 5’8”