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The Factor delivers ultimate power transfer with all-day comfort needed for long rides and maximum effort. The supple Teijin microfiber upper shapes to your foot with a luxurious level of precision, and our adjustable SuperNatural Fit Kit allows you to tune the level of arch support, enhancing efficiency and comfort. At only 6.5mm thick, the light weight Easton® EC90 unidirectional carbon fiber outsole is engineered to provide a direct connection with the pedal, thanks to class-leading stiffness that puts your full effort into forward motion. 

• Teijin lightweight microfiber shapes to your foot; Strong and secure ratcheting buckle closure (replaceable); Offset “D-ring” at mid-foot strap helps to prevent pressure points
• Easton EC90 unidirectional carbon is optimized for stiffness and power transfer
• SuperNatural Fit Kit with adjustable arch support system and X-Static anti-microbial fiber
• 255 grams (size 42)

Giro also includes their SuperNatural Fit Kit with the Factor Shoes. This is their aftermarket insole solution. They made them as thin as possible at the heel and ball of the

feet so you don't feel like you're foot is being lifted out of the shoe by the insole. The base material is EVA foam, so you'll crush the insole where your foot pushes against

it, or "set" it if you want to get technical, over the course of several rides. The top is finished with a thin layer of X-Static material for its wicking and anti-microbial

qualities. But what makes the SuperNatural Fit Kit a big deal is that the insoles come with three different height arches that allow you to customize the arch fit.

The Giro Factor comes in three colors -- Black, Red/White, and White. The buckle is replaceable. The sole is drilled for three-bolt cleats. There are pads underneath both

the heel and toe for walking on slick surfaces. They're available in whole sizes from 39-48 and half sizes from 39.5 to 46.5