These are Birkenstock Birki's sandals, a model that is no longer made. They have been worn very little, I just could never get my feet to mold comfortably to them, so they spent most of their life in the closet. They feel lighter than traditional Birkenstocks (at least to me) while still having that classic Birkenstock comfort and support. Please look closely at all photos for condition details, and feel free to ask for additional pictures if you'd like to see anything specific. I couldn't find a size marking on the sandals, but I normally wear a size 40, which is why they are listed as a 40. I also can measure footbed if needed. Message me with any questions!