Under Armour Men's Zip 2.0 Protect Military Tactical Boot 100% Leather and Synthetic Imported Leather sole Shaft measures approximately mid-top from arch UA Storm technology repels water without sacrificing breathability Full grain waterproof leather & anatomically molded collar provide support & protection Convenient side-zip construction for easy on/off access TPU heel cup adds extra support & protection Anti-odor technology applied to molded Ortholite sockliner to prevent the growth of odor-causing microbes