These options control the appearance of the breadcrumbs pathfield control on the location bar.
Arrow width: The width of the drop-down button in each breadcrumb.
Icon padding left: Left padding of breadcrumbs that are shown as icons (e.g. Desktop or This PC);
Icon padding right: Right padding of breadcrumbs that are shown as icons.
Label padding left: Left padding of breadcrumbs that are shown as labels.
Label padding right: Right padding of breadcrumbs that are shown as labels.
Maximum label width: Maximum width of the label for an individual breadcrumb.
The supplied sizes will be automatically scaled to compensate for your system DPI settings.