Want to careful not to drop anything heavy so, your toes don't have much protection, ie steel toe capped boots. I dropped a slip clutch end off a mower once on my foot by accident only my boots, my foot been flattened.
BTW, in this country thongs are a woman's underwear item.
I was going to tell what they would be called here, but I don't know. I don't see farmers wears such like footwear.