6-8 years old children (125cm-140cm) Aluminium frame designed by B'Twin. The lowered frame geometry makes it easier to get on and off the bike. 6 speeds. Ultra-soft grip shifter for children: change gears using a grip shifter, which is easier and safer (the child doesn't have to let go of the handlebar to change gears). B'Twin chose this shifter as it is extra soft and specially sized for child...