Non-metallic incorporating CAT's patented iTechnology construction system. Durable Goodyear welt forefoot combined with a lightweight EVA heel cradle, offering the benefits of sportshoe cushioning and comfort. Full grain leather uppers; triple stitched at stress-points for added security. Internal composite lightweight toe cap. Moisture wicking lining, anti-bacterial and breathable insole with added cushioning on heel and forefoot. Outsole resistant to 300C. with anti-static properties.