Thanks to @tb927 on here I’ve managed to get a 20″ Trek Roscoe from Dirt Factory for my son. It arrived this morning and is fantastic, except the brake levers are a lot bigger than I was expecting. Actually it’s all a lot bigger than his 16″ Islabike that he’s moving on from. He’s having trouble reaching and pulling the levers confidently. Any ideas whether there are kid friendly levers available that are cable disc brake friendly?