This is an electric folding mountain bike. It has a carbon steel alloy frame which is strong. It has double disc brakes which help to keep the rider safe. The 36v battery can take the rider about 30km in pure electric mode but if the rider pedals as well it can be extended to 80km depending on the conditions and terrain. The bike weighs 16kg so it is light to carry and so when folded it can be lifted into the boot of a car or on to public transport easily and it can be stored at the office or at home without taking up much room. It is suitable for someone 165-185cm in height.