Technomicro base material SIDI's exclusive Tecno-3 Push Closure System Elastic panels in the front and rear of the boot in flex areas for maximum comfort A single ankle support brace, nylon material infused with fiberglass fibers, joins the internal and external ankle joint for more support The exterior ankle support brace is equipped with air vents Small ventilation slots at the center of the support brace Nylon inner sole with removable arch support pad Double stitched in all high stress areas Fully encapsulated heel cup Lined with anti-abrasion Cambrelle in the foot area for comfort Perforated Teflon treated nylon lining Toe slider comprised of nylon reinforced with fiberglass and fitted with an air intake and an innovative alloy insert Dual compound sole DuPont® polymer toe shift pad