Georgia constructed the upper of this black Logger work boot with full-grain leather. Even though the material has a natural softness to it, you'll find it to be incredibly hardy. Simply by tightening or loosening the laces, you are able to adjust the fit of these 8'' work boots, which is why it is so great to have a lace-up design. You won't have to be concerned about the stud hooks being tugged off of these boots, because they have been set on top of steel washers. Material: Leather.