The Lowa Men's Zephyr GTX Mid TF Hiking Boot is rugged enough for service personnel so we know we can count on it when the going gets tough. It has a stiff flex that assures solid support and stability for trekking difficult terrain with heavy packs. We also appreciate GORE-TEX waterproofing whenever the weather makes things even more challenging. Cordura reinforcements complement the Zephyr's ruggedness so we can count on it for years.