When I was a kid in Japan, we called em "machi boots". I don't know where the name came from. I should ask my mother before she passes.
They were very cheap. I think the black rubber boots in most feed and hardware stores are the same basic boots as those machi boots we used to get.
Pretty much the other extreme end of the cost spectrum from these $500 mud boots being discussed here. No doubt made in China these days and probably no more than a $20 bill in a feed store.
Funny, I googled Machi Boots and there's a new goochi company that makes expensive womens shoes and boots.
