But it is in my opinion no special bargain: you can get cheap, misshapen suede lambskin shoes (sole is made of the same material as the leather above). The dark brown "cord" is a flat flexible plastic rod (reminds almost a bit on the long end of a cable tie). A customer wrote that he would be solved within a short time - is true, but for me he is from the beginning-less; you can thread back and balance the left and right sides of the center against each other but him, then it holds for a while (until the next shoe ausleiert). Maybe it would be an alternative to thread a different cord, with which one then could even tie variable ...
The size jumble of various reviews ("buy normal size" to "more than one number is greater") I explain, among other things by high dispersion in the production. I ordered one size larger: one was tight, the other perfectly. But the shoes adapt quickly.
That includes that the cut in the middle by the instep rapidly further open (forward).
Conclusion: I would not buy again, but to return to cheap. Warm socks, possibly. Similar with rubber sole seem to me to make more sense. Or invest more in firmer and higher quality slippers.