Sidi Crossfire 3 TA Boots Technology HIGHLIGHT Replaceable shin plate Micro adjustable and Replaceable buckle system Adjustable Calf System Dual Flex System upper Hyper Extension Block - Flex System Anatomic heel cup Replaceable Metatarsus insets Toe Area Technomicro Microfiber Air Teflon mesh Cambrelle MX Ideal Sole 499.99