SIDI VORTICE AIR MOTORCYCLE BOOTS (BLACK, SIZE 11 / 45) Sidi's Technomicro Double Stitched in All High-Stress Areas Closeable Air Vents Outer + Toe Area, Hard Nylon Shin Deflector Plate 2-Piece Vortice Sole Polyurethane/Rubber, All Bolt-On Parts are Replaceable Techno VR Adjustable Calf System, Anti-Twist External Ankle Support Braces BLACK, SIZE 11 / 45