After construction, we unfortunately had to see that the zipper had burst at the rear corner of the seat. After two repeated use of the chair of the zipper already went to well over 10 cm and there is no way to close the zipper itself again. Thus we had to laboriously disassemble and return the chair. In our view, the point with the zipper a major flaw of the chair and therefore we did not exchange, but demanded back the money. In addition, we found that when the movement of the chair roles in anchoring produce an unpleasant sound. We will definitely opt for another chair.