Nitro is a great work safety boot for women. With premium materials, such as the full-grain leather upper, you will be firmly supported with a quality frame for your boots. The Cambrelle® lining is a special fabric that will keep your feet comfortable, even in warm conditions. Meanwhile, Thinsulate® insulation will keep you warm, when it cools down. The frame of the boot is lightweight and flexible, allowing you to move freely and not weigh you down. The sole is also oil resistant to keep you firmly grounded and give you security you can count on.