A Motocross boot must be durable, comfortable & manufactured with high quality materials to ensure the driver a good sensitivity: the ATOJO SRS motocross boot has all these features & 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 & test it SRS Dovetail soles The SRS interchangeable sole has an innovative design & revolutionary replacement system Design & technology are patented by Sidi The central part of the sole consists of a replaceable rubber insert designed with a new interlocking system & 4 screws for safety Flex System Atojo SRS has two bending points The first joint under the ankle, to reduce thickness & make the boot smoother & more aerodynamic on the inside The support brace placed inside has a limited excursion to prevent hyper-extension of the ankle, of the instep & 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 & lateral protection Hyper Extension System Three removable anti hyperextensions systems, the first on the first joint, the second on the back of the boot & the third is frontal & is made up of an innovative system that, through a screwed & replaceable insert, allows a specific tibia flexion range & 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 ankle Velcro & buckle closure system ATOJO SRS uses a 3-buckles closure that work independently of each other Each closure consists of a toothed strap & 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 Certified EN 13634