However, it must also be stated that the quality and durability has significantly subsided.
For me, the upper of the sandal breaks regularly on the inside between the two belts. If you kneel for example, there arises a kink. The synthetic upper of the sandal holds the not long stand. In my last pair of the outer material is torn after about 1/2 year household.
Even for a relatively favorable Sandal This is a much too short a shelf life. Will probably soon, in the hope that this will last longer, be more expensive once the Birkenstock version with leather upper a chance.