Under Armour Men's TAC Zip 2.0 Military Tactical Boot 100% Leather and Synthetic Imported Leather sole Shaft measures approximately high-top from arch 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 Cupron Anti-Fungal Pro Fibers reduce odor & kill 99.9% of athlete's foot fungus after 12 hours of contact with the sockliner