The modern successor of the 574 series.
Very good build quality, lightweight, warm, and comfortable.
Compared to the two classic 574s that I had (all leather & fabric - suede), I have to say that the 57/40s fit even more comfortably on the foot. With the 574s, although they were comfortable and convenient for walking and standing, I felt a hit on the big toe, but the 57/40s do not have such a square front part, so this hit no longer exists.
I have had them for 2 months already and so far I have nothing negative to say. Time will show their durability.
Buy them in your size.

Very convenient shoe, truth be told.. On the negative side, it is extremely dangerous as it slips a lot. Especially in wet sidewalks during winter with a slight incline, don't make the mistake of forgetting and walking fearlessly.. I've had them for 6 months now and I can confidently say that it slips excessively. Despite all that, it is a beautiful and convenient shoe.