I bought them before the summer started. The times I wore the shoes were few. Very nice feeling on the foot and very comfortable to walk in. At first, you will feel them a bit hard but don't be afraid, they soften a lot with walking. I would buy them again. They are worth the money and more.

These sandals that have BF written on them are not the classic Birkenstock ones. They are indeed authentic Birkenstock, but the model is Birko-Flor. Instead of genuine leather, they have a type of synthetic leather on the upper part, with crushed leather flakes pressed together with glue to give them the appearance of leather. That's why they are much more affordable than the classic models. I don't know how durable they will be, but the feeling on the foot is like synthetic material. The sole, buckle, and footbed are the same as the regular ones. I made a mistake trying to save 20 euros, but I should have suspected it with such a price difference.

Edit June 2023.

They're gone, I threw them in the trash. These are only for indoors. Firstly, the leather stretches more with the dress compared to the old Birkenstock, and the foot floats inside. Then obviously they collect more foot sweat and smell, something I hadn't noticed with the old ones. Overall, a waste of money.

Awesome feeling and comfort.
Reading other reviews, I got it one size smaller than my usual and it's okay.

Very high quality shoe. Definitely get them one size smaller, possibly even 2, as their fit is very wide

The best purchase I have made so far! Simply perfect, I recommend them both for outside and inside the house, summer and winter (personally, I can't wear closed slippers because my feet sweat, so these are just what I need). The size is like the "political" shoe we say, you might need half a size bigger than your regular size.