These 6-inch alloy toe work boots from Dr. Martens are made with 100% full-grain leather uppers. The leather used in these safety toe boots is incredibly rugged and durable as it’s resistant to abrasions. However, don’t let that industrial strength lead you to believe your feet won’t breathe in these Dr. Martens boots. The natural full-grain leather is lightweight as well as both breathable and soft. Dr. Martens attached the lightweight leather uppers to a slip-resistant outsole using PVC welt construction. This ensures that your Camber work boots have enhanced traction and durability. In fact, these 6-inch boots meet the ASTM F1677-2005 safety standard for slip resistance. That’s not the only safety standard these alloy toe Docs meet. These work boots are also electrical hazard rated as they can protect you against open circuits of up to 600 volts under dry conditions. On top of that, the steel alloy toe cap that Dr. Martens added will guard you against impact and crush injury as it, too meets the ASTM F2413-11 M1/75 and C/75 standards. The interior of this safety toe EH footwear provides plenty of comfort and cushioning. Dr. Martens trademarked SoftWair sock liner delivers extra cushioning at the heel and forefoot. This moisture-wicking sock liner is also patterned in order to promote underfoot airflow that ensures your feet will stay dry while you’re at work. Material: Leather, PVC Sole.