Under Armour Men's Valsetz RTS Side Zip Military and Tactical Boot Synthetic, Textile Imported Rubber sole Shaft measures approximately ankle-high from arch UA ClutchFit technology wraps your ankle with a lightweight "second skin" for powerful support & incredible feel Synthetic leather & textile upper with welded, abrasion-resistant film around the perimeter of the foot Full-length Micro G foam turns cushioned landings into explosive takeoffs Lightweight TPU shank for mid-foot support & the right amount of rigidity Molded Ortholite sockliner is designed with a memory foam top & PU base