The updated ZEPHYR MK2 GTX MID delivers increased strength, durability, and technical performance. Featuring the GORE-TEX® ePE waterproof/breathable laminate with no intentionally added PFAS, it provides reliable all-weather protection. Upgrades include a dual-density PU midsole for heat and cold insulation, a tear-resistant split leather/Cordura® upper, locking ankle eyelet, lace holster, instep protection for fast-roping, and a slip-, heat-, and fuel-oil–resistant outsole. EU PPE certified. Duty Boot Certification: CE EN ISO 20347:2012 — 02 WR SRC FO CI HI HRO Upper Height (inside/outside): 110 / 145 mm