Description The Sidi ST Motorcycle Boot has a modern and futuristic look that uses the highest quality materials in its structure to create a premium product in terms of technology, functionality and manufacturing quality. The boots have been developed to offer excellent performance while riding. Specs Upper: Technomicro Microfibre Lining: Air Teflon Mesh // Cambrelle Sole: Semelle supérieure CE CERTIFIED LEVEL 2222 Features ZIP ELASTIC PANELSidi has added a small elastic panel to aid in a smooth zipper operation as it allows a bit of movement via the elastic as the zipper passes over the rider’s ankle ball.ANKLE SUPPORT BRACESA single ANKLE SUPPORT BRACE joins the internal and external ankle joint for more support. In the outer lower part, the ankle support brace is equipped with air vents which can be operated by an aerodynamic shaped button. The ankle support brace is made with NYLON material with glass fiber. Small slots on the joint’s central part allows perspiration and air dissipation.REPLACEABLE ST10 - BUCKLE AND STRAPThis closure system adjusts to the leg circumference on both sides therefore increasing the opening of the boot for ease of putting on. REPLACEABLE SLIDERThe slider is replaceable and available in full nylon, with ceramic or with aluminium inserts.SHOCK ABSORBING HEEL CUPA polyurethane shell holds a shock absorbing insert, visible from the outside through small slits that mark out the look of the heel. The shell is mobile as it is fixed to the boot by two screws that allow 3 mm of impact movement.AIR VENTILATION SYSTEMOn the outer lower part of the boot an air intake is fitted which can be operated by an aerodynamic shaped button.