Belleville TR960ZWP Tactical Research Khyber Lightweight Black Side-Zip Boot leather-and-synthetic Vibram sole Shaft measures approximately Mid-Calf" from arch Full grain cowhide leather &amp; nylon fabric upper Gore-tex waterproof fabric bootie Side Zip Entry for easy-on and easy-off petroleum, oil and lubricant (POL) resistant 8&quot; (Standard Military Height)