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FLR Road Cycling Shoe | F-35 Knit

Size Guide

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The F-35 XD-Knit sets a higher standard for entry level riders. We redesigned our F-35 knit to look sleeker, provide maximum comfort to any rider and create a tighter fit to conform perfectly to your foot. 

The new F-35 Knit was designed with a seamless upper with TPU protection to keep your feet secured and comfortable in the shoe. We added a reinforced leather heel support instead of mesh and added some extra ventilation holes into the mesh to keep your feet extra cool. The triple layer of nylon makes sure to keep your foot from moving and the upper from stretching for a secure fit.

Instead of the dial, you have the option of three Velcro straps for an easy in and out of your cycling shoes or you can choose to have laces. Both systems leave your feet secured in the shoe.

The F-35 Knit upper rests on the R250 nylon outsole – lightweight and provides a perfect combination of stiffness and compliance.

Cycling shoe sizing guide

Sidi Size Guide

*Customers switching to Sidi Shoes or from Sidi;s more than 5 years old, may not wear the same size. All Sidi's, except for winter shoes, are built on the same last, but differences in patterns and materials so keep this in mind when switching between Sidi models. Every Sidi Shoe (except triathlon models) from 2002 onwards is stamped with its size and last type (and M indicates Mega or W indicates women's), Usually on the tongue.

Standard Width is considered as a D width

Mega = EE shoe fit 4mm of extra space across the ball of the foot. If you have high-volume orthotics you may feel more comfortable in a mega shoe.

Women fits - "Women specific" shoes are a narrower and smaller version of the regular fit option. The heel and ankle areas have also been narrowed.

How do I know if its a good fit?
Some people have narrow heels, if you know this to be true we recommend getting a shoe with a heel retention device. This will allow the heel to be narrowed.


Is it too small? If you stand up with your shoes on and your toes are touching the front, your shoe is small. You don't want any toes touching the front of the shoe, this will create hot or numb toes on long rides. You want to be able to wiggle your toes a bit, but not feel like they are "sloshing around"

Tip* Try on your new Sidi Shoes with the cycling socks you normally wear

If the shoe doesn't fit? Don't worry, we offer a 1 free resize policy to make sure you are very comfortable on your bike