The Sidi Genius Fit replaces the previous 5 Pro road shoe adding the Millennium 4 carbon composite sole that gives the shoe a 37% increase in stiffness and improves energy transfer to the pedals.
The upper stays very much the same with two Velcro straps with the stepped locking security system and one ratcheting strap with the Ultra SL buckle. The Ultra SL buckle can be adjusted when on the bicycle and when paired with the Soft Arch Compression strap, provides a comfortable yet incredibly secure fit. Molded plastic heel cup further keeps the foot in place while cycling. Mesh vents are placed at the ankle, along the top of the fore foot, and in the toe box. Sidi's Technomicro upper material is durable, supple, and cow free.