The advantages have already been mentioned in previous reviews:
Installation on a Gesslein pram worked well because the fastening system is really flexible.
The child has pleasure.
The folding is useful.
The not so nice:
The thing rattles unloaded.
The spring clamps that secure the inclusion, are no longer smooth - you have the hang always watch / rework.
The real evil:
The storage of the main roles wears too fast. The wheels grind on the record, because the camp have so much game that the rollers are at an angle. Since rubbing plastic to plastic and an adjustment is not possible. The state we had 7 months after purchase.