I wouldn't say there's anything wrong with them, except that they haven't been particularly durable. They still work very well, despite being held on, and together, with zip ties. One of the rear mounting brackets has broken in two. The front fender has broken in two pieces at the top mounting point. (To be fair, the latter is more related to damage than wear.) I realize a plastic fender's life will be shorter than a steel bike frame, but it would be nice if a pair of fenders lived longer than a pair of my tires.

Still, I've not seen any better options, so I'll replace them with another pair of Longboards.