Second delivery:
The replacement came and seemed to be close. Was the first shipment probably really a Monday model (even if the sutures of the second delivery processed as unclean looked). Or maybe not: it came as it had come, after less than four weeks not to frequent use, the replacement also a hole. Back on one of the sunken chambers. Because of the favorable price into perspective quickly. Now she goes to the dustbin.
For 2 weeks on vacation use as a disposable product might still okay, as fun for the kids in the summer in the domestic pool durability is too limited.