Myself shoe size 42.5. The 41 is only for something Add to match the shoe expands somewhat. The 42 fits perfectly, was even able to attract even thick socks from Grandma.
For the price, you can not complain, free processing is ok but not a Birkenstock! Perfect when times visit there or you yourself where goes where you know there is always quite cold ^^
Even I wear them also like on cold days, just because they are closed! The coat will quickly smell to attract so always nice fresh socks)