This updated version of the Zephyr Hi is stronger, more technical, more durable and even higher-performance than the original Zephyr Hi. Designed for warm weather missions in dry conditions, with standout features such as a dual-density PU midsole that insulates against heat & cold, tear-resistant, breathable split leather/Cordura® upper, a locking ankle eyelet, a lace holster, instep protection against rope abrasion while fast-roping, and a new slip, heat & fuel-oil resistant outsole. All in a tall shafted version for extra protection and support and EU PPE certified. Durably waterproof/breathable.