We have our children (six and eight years) two Roller HUDORA Big Wheel bought in late 2007 205, in which we had now numerous complaints: - The folding mechanism has not properly engaged with both scooters for over a year, so that the scooter is folded while driving. Overall, the folding mechanism is structurally deficient. Replacement free of HUDORA. - Fork to break a scooter after almost two years during the journey - for free repair by HUDORA. - The joint axis of the column bends, so that the stand about work and the spring jumps out - in one case, the spare part has just held once two months. Moreover, missing the front an apron as a splash guard. The footboard is on the sides relatively sharp edges - risk of injury. Conclusion: The design and durability are insufficient in many details.