Birkenstock leather flats - Gizeh BS - Habana - Size 37/US 6

Birkenstock leather flats - Gizeh BS - Habana - Size 37/US 6 Please refer to photos/labels for size info as I am unsure of how European shoe size works (box says size 37 is a size 6 but internet says size 5 or 5.5 as well….so, please do your research please!). Worn no more than 5x at home to try to “break it in” but never wore it after. Has not been worn since then and it needs a new awesome owner. Soles of flats are in excellent condition as you can see in photos & vid (IMO worn shoes often look very dark). Slight marking at back of foot rest on right shoe (see vid). For details please see: https://www.birkenstock.com/ca/gizeh-oiled-leather/gizeh-core-oiledleather-0-eva-u_5326.html?dwvar_gizeh-core-oiledleather-0-eva-u__5326_width=N