SIDI X-Power SC BootsThe X-Power SC joins the Sidi family of Off-road motorbike boots. Worthy successors to the X-3, they do not compromise on comfort and safety, and while paying special attention to the foot and ankle, they protect the shin from possible shocks by means of the boot guard with anti-slip and anti-heat rubber insert. These new boots are made of waterproof Techno Micro fabric and have a soft lining to ensure maximum wear-ability, whereas the tongue and rear joint are made of thermoformed microfiber, a reliable material that gives the footwear durability and high comfort.Four replaceable micrometric A micrometric fastener is an adjustable fastener commonly used in helmets, pants, boots, etc. Also known as "micro ratchet" or just plain "ratchet fastener", the system uses a spring-loaded ratchet mechanism that interlocks with an opposing strip of toothed metal or plastic. It is best known for its ease of adjustment - especially with gloved hands. In helmets, it takes the place of the classic double D-ring closure. levers, equipped with adjustment memory and toothed strap, help close the footwear correctly, and the ankle houses the flexibility control system - Flex System. This system, common to all the boots of the Treviso-based company, limits flexion through a mechanism inside the joint and is equipped with a shaped plastic to increase safety and reduce rear movement. To maximize sensitivity on the bike, the inner part of the boots has a smooth surface for renewed contact and optimum grip with the bike.Features: Slim, cool non-bootie design Widest fit option of the Sidi boot collection Lined with anti-abrasion materials for breathability Molded Vibram sole for grip and durability Removable arch support Inner gaiter to block dirt and debris Toe area covered in protective plastic Replaceable micro adjustable cam lock 4 buckle system with memory straps All bolt on parts are replaceable