Sidi, continuously researching new technological solutions to enhance rider safety, is proud to present the Strada Evo Air boot. With Sidis great style, feel, support and quality there are no finer performance off road boots in the world. Non-Bootie Designs Sidi boots do not incorporate inner booties into their design, and for good reason. Booties make the design larger and cumbersome add to the boots thickness, which interferes with shifting, plus the inner booties retain body heat affecting the riders performance and comfort. Composite Inner Sole Resists side to side compression offering greater protection compared to the leather inner soles that our competitors use. The insole features a removable arch support and will never lose its dynamic characteristics, even after months of intense use it is water resistant and is designed to withstand high footpeg pressures. Replaceable Parts Riders can change the various components to replace items that have worn or have been damaged in a crash or to make a custom colored boot to match his/her personal taste. Lorica Boot's outer is fully constructed with Lorica, a composite micro fiber material created from strands less than one thousandth the thickness of silk. When injected with special resins, these fibers act like natural leather skin, but with the addition of better strength, softer texture, lighter weight and better moisture protection. Lorica is also highly resistant to abrasion - yet it still breathes - with more than three million pores per square centimeter. Easy to maintain, Lorica doesnt stain and cant be scratched and offers, reduced weight, more flexibility and more feel than leather racing boots. Lining Each Strada series boot is lined throughout with lightweight perforated Teflon treated fabric in order to allow moisture to breath out to the Lorica outer and dry quickly with no mold build up in the long term. Additionally the inner ankle area of all Strada series boots are fully lined with Sidis own formula of perforated closed thousand-air cell memory foam. A totally breathable lining system. Features Kent Vent (2) air intake scoops for maximum airflow Lorica outer construction Perforated Teflon treated nylon lining Composite inner sole Removable arch support Double stitched in all high stress areas Fully encapsulated heel cup Zipper and Velcro closure system Dual compound sole DuPont polymer toe shift pad DuPont polymer ankle cup Strada Air bullet points only