The Harmony will suit 6 to 8 year old girls. At this age it's worth having gears, but not too many, so it comes with six speeds operated by a simple twistgrip. Now at least they can keep up with you. It's a mountain style bike, so it has front suspension and chunkier tyres. V-brakes with reach adjustable brake levers, which we'll set up for small hands. The frame has a nice low crossbar with stylish graphics. Othes options in this wheel size include the MX20, and if you want something lighter and faster, checkout the Dimension 20 range.