Sidi Genius 6.6 Vent Carbon Shoes

Sidi Genius 6.6 Vent Carbon Shoes
$379.99
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Just because Sidi's Genius 6.6 Carbons took multiple victories in the Tour de France and Giro d'Italia doesn't mean Sidi wouldn't make them even better. Thanks to their T700 carbon soles, these shoes are light and stiff for awesome pedal power. The closeable vented soles provide airflow, while the breathable Lorica/mesh uppers offer luxurious comfort and keep you cool and dry. Plus, Sidi's Soft Instep Closure System, Caliper buckles, High Security Velcro straps, and Adjustable Heel Retention Device provide a truly custom fit that keeps you feeling great on even your most epic rides. What's more, Sidi's handmade carbon soles are crafted in the same Italian factory that makes Ferrari and Ducati parts so you know these shoes are fast.

Fitting Yourself to Sidi Cycling Shoes

There is no substitute for a perfect fit. Your shoes are the most important contact point between you and your bike, affecting power, comfort, and providing that locked-in feeling of oneness with your bicycle.

Fitting tips
Try shoes on at the end of the day — your feet swell by at least a half-size as the day progresses, and as much as a full size on hot days.

Stand up. Feet expand under pressure — standing up will give you a better sense of how your shoes will fit under pedaling pressure.

Bring the socks and orthotics you ride with — they have a tremendous influence on foot volume and fit.

Be patient! Non-leather cycling shoes do not stretch over time — how they fit in the store will be how they fit, period. However, as the shoes warm up from body heat the uppers will become more pliable and conforming. Give your shoes at least 10 minutes to heat up, and readjust the closures to accurately gauge how they’ll feel mid-ride.

Foot measuring devices typically measure length and width only, and do not account for overall shape or foot volume. It’s imperative that you try on shoes a half-size larger and smaller than your measured size, for confirmation of proper fit.

How Sidis are sized
Sidi half sizes are 3mm longer, with slightly increased toe box volume. Full sizes are 6mm longer, with proportionally greater volume.

Standard-size Sidis roughly correspond to a D width on the industry-standard Brannock sizing scale.

Mega sizes are cut with more material throughout, and larger-volume heel cups. Mega sizes roughly correspond to an EE/EEE width on the Brannock sizing scale.

Narrow sizes are cut with less material throughout, and narrower, lower-volume heel cups. Narrow sizes roughly correspond to a B/C width on the Brannock sizing scale.

Women’s Sidis have a more tapered shape and lower volume than standard or narrow-width Sidis. Women with consistently wide or narrow feet, from heel to the forefoot may experience better fit in Sidi standard or narrow widths.

The four common cleat bolt patterns.
In order to mount your pedal cleats to your shoes (cleats are included with new pedals and sold separately), the cleats and shoes must have matching bolt patterns. 

There are four cleat configurations found on cycling shoes (diagram): SPD-R, Look/SPD-SL, SPD and Speedplay. Road shoes feature one, two or even three of these. Off-road shoes usually use the SPD pattern. If you're unsure which cleats your shoes require, please ask us. We're here to help!

Lorica is a lightweight, flexible, water repellent and breathable material made of the finest microfibers. It's amazingly durable and, like leather, it improves with age.

Sidi's Vent Carbon sole.

Sidi's Vent Carbon soles optimize your power transfer and ensure top comfort, too. They deflect just 1.4mm when 110 pounds is suspended from the tip. Plus, a small degree of toe flex is built in so you enjoy comfort mile after mile.

Another great feature is the built-in adjustable vents at the front of the soles that can be set to let in or seal out the air. When open, the vents work with the channels beneath the perforated footbeds for excellent airflow and comfort.

Sidi Soft Instep Closure System
Sidi's Soft Instep Closure System is anatomically shaped to eliminate pressure points in order to provide a snug, secure, and ultra-comfortable fit.
Sidi's Caliper buckles make it super easy to fine-tune how tight your shoes are even when you're riding. Simply lift the Ratchet Levers to tighten, and press the Side Levers to loosen the fit or release the strap.

Sidi's Adjustable Heel Retention Device provides a snug, customizable fit around your heels and ensures maximum pedal power. Simply turn the screws in the back of the Retention Device to tighten or loosen the fit and eliminate slippage.

Sidi Fit Relievers
Sidi's Fit Relievers are tiny cuts in the tongues that reduce bulk and keep the tongues from ever rolling over for maximum comfort.

Part Numbers

Option UPC MPN Store SKU
39 2000000409962 13102112390
39.5 2000000409979 13102112395
40 2000000409986 13102112400
40.5 2000000409993 13102112405
41 2000000410005 13102112410
41.5 2000000410012 13102112415
42 2000000410029 13102112420
42.5 2000000410036 13102112425
43 2000000410043 13102112430
43.5 2000000410050 13102112435
44 2000000410067 13102112440
44.5 2000000410074 13102112445
45 2000000410081 13102112450 3478
45.5 2000000410098 13102112455
46 2000000410104 13102112460
46.5 2000000410111 13102112465
47 2000000410128 13102112470
48 2000000410135 13102112480