The Diamondback RM16 boys bike has an 10" lightweight alloy frame & 16" wheels. With a cool bright look the Diamondback RM16 benefits from: Lightweight aluminium MTB frame Black lightweight alloy rims Pneumatic tyres for better control V brakes for powerful steady braking with easy pull levers for little hands Safety non-slip pedals Chain guard for added prtection 2 piece handlebar & stem so you can fine tune the riding position & reach slightly. Weight of this bike is Approx. 9 kgs. The 10" frame is suitable for an inside leg range of 43cm to 52cm (age 5+) All Diamondback bikes exceed the latest European Safety Standards