The newly updated ZEPHYR MK2 GTX HI , features the GORE-TEX® ePE waterproof/breathable laminate with no intentionally added PFAS. Built to be stronger, more technical, and more durable than the original, it delivers higher performance for demanding professional use. Duty Boot Certification: CE EN ISO 20347: 2012, meeting code 02 SRC FO CI HI HRO Upper Height Inside/Outside: 175/210 mm