A Motocross boot must be durable, comfortable and manufactured with high quality materials to ensure the driver a good sensitivity: the ATOJO SRS motocross boot has all these features and has also been significantly reduced in weight compared to previous models, without compromising the protection. The height of the boot reflects the requirements of our professional athletes who have helped us to develop and test it. Upper material technomicro microfibre Lining lined with Cambrelle® and air Teflon mesh Sole SRS dovetail sole with the innovative and patented interlocking system. SRS sole can be replaced using a standard screwdriver Technology Technomicro microfiber upper and PU protections Lined with air Teflon mesh and Cambrelle Micro adjustable and replaceable buckle system Toe entirely wrapped in plastic protection with geometric design Replaceable metatarsus protection Anatomically shaped PU heel 3 Hyperextension-systems (in the front, in the back of the boot and under the ankle) Pu bootleg on the back Inner PU bootleg Anatomically shaped PU shin plate 3-buckles closure Upper Velcro closure Elastic gaiter Replaceable SRS sole SRS Dovetail soles The SRS interchangeable sole has an innovative design and revolutionary replacement system. Design and technology are patented by Sidi. The central part of the sole consists of a replaceable rubber insert designed with a new interlocking system and 4 screws for safety. Flex System Atojo SRS has two bending points. The first joint under the ankle, to reduce thickness and make the boot smoother and more aerodynamic on the inside. The support brace placed inside has a limited excursion to prevent hyper-extension of the ankle, of the instep and of the back tendon. The second joint, above the ankle, which works in sync with the first one, improves the flexibility of the boot without compromising the rigidity and lateral protection. Hyper extension system Three removable anti hyperextensions systems, the first on the first joint, the second on the back of the boot and the third is frontal and is made up of an innovative system that, through a screwed and replaceable insert, allows a specific tibia flexion range and freezes if bending is excessive. Calf Section The boot leg is equipped with a suede calf section cover enriched with embossed rubber inserts which, in addition to providing good grip in contact with the bike, have the function of protecting the leg from heat. The rubber inserts are also placed on the inside of the anklet. Velcro and buckle closure system ATOJO SRS uses a 3-buckles closure that work independently of each other. Each closure consists of a toothed strap and a hook with a micrometric adjustment memory. Buckles, straps ens hook are replaceable. The upper part of the boot has a Velcro closure with a soft rubber terminal, for wider adjustment. Shin plate Anatomically shaped PU shin plate, whose structure also extends under the upper for more protection.This item cannot be shipped to the United States and Canada.