That's because, when Cube's engineers set out to design it, they began with the same heat-treated 6061 aluminium tubes that we use in our adult frames. The result is a frame that's every bit as durable as a full-size mountain bike, but with the right weight and proportions for a child. Mechanically formed tubes mean that it's bang up to date in terms of technology, too. The geometry is tailored to the needs of young riders, so it's stable and easily controllable with a low top tube to improve confidence and safety - and the replaceable gear hanger ensures that an accidental knock needn't result in an expensive repair. There's a Suntour suspension fork to improve comfort and control on rough surfaces, and Shimano 7-speed gears with Velo grip control bring every hill within reach. The V-brakes are powerful and easy to control, thanks to levers that are specially designed for small hands and a power modulator on the front. With a bike like this, there's nothing standing in the way of off-road adventures for your little riders... Cube Acid 240 Build Features Frame: High Performance Aluminium Suspension: SR SunTour SF15 Brakes: Alloy V Brake Gearing: Shimano M310 7-Speed