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SidiGenius 7 Air Carbon Cycling Shoe - Men's


Item # SID00AA

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  • Shadow Black, 41.0 ($259.99)
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Item # SID00AA

Genius 7 Air Carbon Cycling Shoe

The Genius shoe is among the old guard in the Sidi lineup, well revered for its fit and durability and the shoe continues to be one of its top sellers to this day. We love its reliability and good looks along with the ability to replace most of its hardware like the heel pad and buckle, making it a good investment. This particular version of the Genius 7 Air Carbon Cycling Shoe means its Microtech Microfiber upper gets a myriad of perforations, adding much needed ventilation to the venerable material on hot summer rides.

The Genius Fits use Sidi's beloved ratcheting buckle for retention. Is "beloved" too strong of a word to describe fastening devices on cycling shoes? Maybe. But after tens or even hundreds of thousands of miles together, we suggest that the average cyclist's bond with Sidi's buckle system is more than simply utilitarian. With wire dials (originally a Sidi innovation in the early 80s) and laces enjoying a fashionable renaissance in the peloton, it's easy to lose sight of the fact that virtually any cyclist pedaling in anger during the past three decades relied almost exclusively on this buckle—or a buckle largely based on it—to fasten their cycling shoes. So "beloved"? Yeah, we're comfortable with it.

Given the buckle's history, you're no doubt familiar with its micro-adjustment operation, which lets you vary strap pressure to nail the perfect fit, every time. The Soft Instep 2 Closure System evenly spreads the upward stroke pedaling forces across the top of your foot while also alleviating the discomfort of over-tightening. The mid- and forefoot fit is managed by a pair of standard Sidi hook-and-loop straps that feature an additional strip of polymer teeth to ensure secure locking that persists long after the hook-and-loop filaments have been blunted down to wilted, apparently useless shadows of their former selves.

The before mentioned water-repellent and quick-drying Microtech uppers get a host of tiny air holes for maximum breathability and are a blessing while climbing on hot, stifling days. Additionally, it's both abrasion- and mildew-resistant for durability and long life and resists stretching so the fit is kept in check season after season. If you've ever lost a buckle in a crit pileup, then you'll also be happy to know that all of the upper's hardware is also replaceable.

The Millennium 5 Carbon Composite outsole is redesigned and isn't of the current crop of full-carbon that now defines the $200 shoe range. Instead, it's a nylon matrix shot through with carbon fiber, blending weight, stiffness, and price in a sole that's as ready to race as it is to spin through a charity ride century. It also resists warping due to humidity, heat, and age, so you'll be wearing the these long after you've worn out and replaced the heel pad. The important takeaway here is that for all those years we've been relying on Sidi's buckle to keep our feet strapped to our shoes' soles, this has been the sole we've been strapped to. Comfort, stiffness, durability: it's all there. We know because we've tested it for years on end, so all of the above isn't just catalog palaver, it's a reflection of our experience.

  • Sidi's classic cycling shoes built for comfort, cooling, and durability
  • Plenty of stiffness and controlled flex from the Millenium 5 outsole
  • Breathable, synthetic uppers conform to your foot and allow for airflow
  • Traditional rachet buckle and hook-and-loop strap fastening system
  • Sidi's Genius line is the definition of comfort, style, and performance cycling footwear
Tech SpecsSize
Tech Specs
Upper Material
Microtech microfiber
Caliper Buckle, Hook-and-Loop straps
Millennium 5 Carbon Fiber Reinforced Nylon
Cleat Compatibility
Recommended Use
road cycling
Manufacturer Warranty
1 year


Cycling Footwear
35.5   4
36   4.5
36.5   5
37   5.5
37.5   6
38 5 6.5
38.5 5.5 6.5 / 7
39 6 7
39.5 6.5 7.5
40 6.5 / 7 8
40.5 7 8 / 8.5
41 7.5 8.5
41.5 8 9
42 8 / 8.5 9.5
42.5 8.5 9.5 / 10
43 9 10
43.5 9.5 10.5
44 9.5 / 10 11
44.5 10 11 / 11.5
45 10.5 11.5
45.5 11 12
46 11.5  
46.5 11.5 / 12  
47 12  
47.5 12.5  
48 13  
48.5 13.5  
49 14  

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Perfect fit

  • Familiarity: I've used it several times
  • Fit: True to size

I’ve been using Sidis since 1975. They’ve never disappointed. They have great support and fit. I have sort a wide foot, EE, and high instep. I contemplated the mega because in the past, 1/2 sizes were wide. The 43-1/2 fit my size 10 foot perfectly. Haven’t used them for long rides yet, but I think they feel up to the job.