·Sidi’s proprietary Technomicro isperforated outer for maximum air flow.
·External ankle brace system.
·Nylon inner sole with removable archsupport pad.
·The two piece Vortice sole isconstructed of a polyurethane and rubber blend. It features a removable insertin front of the arch area where much wear and tear normally occurs due to sharpmetal brake pedals and shift levers. Another patented-exclusive Sidi feature!
·Technomicro is used as a basematerial.
·Double stitched in all high stressareas.
·Closable air vents on the foot outerand toe areas.
·All bolt on parts are replaceable.
·An elastic panel adjacent to theentry zipper allow a bind free zip and improved fit.
·DuPont polymer toe shift pad.
·Perforated Teflon treated nylonlining.
·Shock absorbing heel cup.
·The toe slider is made in nylonreinforced with fiberglass. It is fitted with a new air intake and aninnovative alloy insert.
·Tecno - II buckle system for aperfect glove like fit.
·Tecno VR adjustable calf system.
·The Vortice can accommodate riderswith up to an 18-inch calf diameter 12.5 inches above from the bottom of theirheel. With an optional longer strap system riders with up to 20 ½ inch calfdiameters can be accommodated.
·Padded Achilles area.
SportRider Magazine: "The Vortice Air’s overall fit and finish are Sidi’s usualtop-notch quality, with excellent ankle support and protective feel.”
Chickenhawkracing.com"The bottom line is that if you want to have good protection, comfort, fit andstyle the Sidi Vortice or Vortice Air boots should be on your list to check outand try on before you make your next purchase.”
Cycle News: "High-tech, Fully adjustable,Comfortable, Excellent value for the money and Well ventilated”