Delta GTX is a state-of-the-art safety highcut boot with all the best technologies in a very classic design. Full grain impregnated leather for best in class durability. Vibram® rubber outsole with new developed FLEX-SYSTEM technology ensures that the shoe will support your step from heel strike to toe off. High injected PU midsole for maximum comfort and rebound. GORE-TEX® membrane with winter lining in wool for waterproofness and top of the line breathability.