Fast delivery and Thanks Vormantage simple assembly (about 20 minutes). As mentioned in other customer recessions, the pneumatic tires of very particular advantage are: on the street, they offer a simple handling (even for inexperienced / untrained children) and also provide easy cross-country (including lawn was for our 5 year old son is no problem). The seat can be adjusted continuously (with plastic clip): This plastic clips could be a weak point, but what we can not yet confirm date. The chains are protected from children's hands, with a tightening of the chain (acc. To instructions) should be possible (previously we had diesbetüglich no need yet). Overall, our son has a lot of fun with this Kettcar what is due, inter alia, the above-mentioned pneumatic tires (speed and light off-road capability).