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Sidi Kaos Air Carbon Shoes - Men's

Sale $150.00 $299.95 50% off

Item # SID007V

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  • Blue/White, 39.0 ($150.00)
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  • Blue/White, 44.0 ($150.00)
  • Blue/White, 45.0 ($150.00)
  • Blue/White, 46.5 ($150.00)
  • Blue/White, 48.0 ($150.00)
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Item # SID007V

Chaotic confection.

When it debuted in 2015, the Kaos platform took two tech flavors that we had simply assumed were mutually exclusive — ratcheting buckles and wire dials — and combined them in one entree. It turns out the combination is a bit like chocolate and peanut butter: apparently illogical but impossible to live without once you've sampled it. For 2016, Sidi adds yet another confectionary wrinkle to the new men's Kaos Air Carbon Shoes by replacing the brand's standard, glossy upper with the well-perforated Air upper.

We're struggling to extend the food metaphor with a third ingredient to complement chocolate and peanut butter — pretzels, maybe? — but in actual, on-road experience, the Air upper's multitude of perforations increases the Kaos' ventilation points and decreases foot temperature on long days under the hot sun. As with the its Tecno 3 wire dial, the Kaos is the first shoe to feature the Air upper below the $400 point, bringing Sidi's highest level of ventilation to a more affordable price point.

The Kaos Air incorporates both a traditional ratcheting buckle at the top and the Tecno-3 wire dial for the mid- and forefoot. The Tecno-3 buckle operates like a quick-release hub: flip the lever up to open it, turn to tighten, and flip it down to lock your fit in place. The wire itself is both non-binding and non-stretch, so it adjusts smoothly without loosening over the course of your ride. Of course, one of the joys of owning Sidi shoes is mid-ride fiddling, so rest assured that both buckles are easily adjustable while in the saddle. The shoes also have the same amount of instep padding as Basso's own favorites, the Genius 6.6, so you can ratchet these puppies down with impunity.

The outsole is 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 century. It also resists warping caused by humidity, heat, and age, so you'll be wearing the Kaos Air long after you've worn out and replaced the bolt-on heel pad. If you've ever lost a buckle to a crash, then you'll also be happy to know that all of the shoes' fastening hardware is also replaceable.

  • Millenium 4 Carbon Composite outsole
  • 1 Tecno-3 wire dial and 1 ratcheting buckle closure
  • Air upper

Tech Specs

Upper Material:
Lorica Vernice Microfiber
Closure:
1 ratcheting buckle, 1 Tecno 3 buckle
Sole:
Millenium 4 Carbon Composite
Cleat Compatibility:
3-bolt road
Recommended Use:
road cycling
Manufacturer Warranty:
1 year

Size chart

Cycling Shoes

Men's
US SHOE SIZE5.566.577.588.599.51010.51111.51212.51313.514
Chrome 37.5 38 39 39.5 40 41 41.5 42 43 44 44.5 45 46 47   47.5   48
Diadora 38 39 39.5 40 40.5 41 42 42.5 43 43.5 44 44.5 45 45.5 46     
DMT 38   39   40 41 42 42.5 43 43.5 44.5 45 45.5 46   47 48  
Five Ten 37 38 38.5 39 40 40.5 41 42 42.5 43 44 44.5 45 46 46.5 47   
Fi'zi:k 38 39 39.5 40 40.5 41 42 42.5 43 43.5 44 44.5 45 45.5 46     
Gaerne 38 39   40   41 42 42.5 43 44 44.5 45   46 47 48   
Giro   39 40 40.5 41 42 42.5 43 43.5 44.5 45 45.5 46 46.5 47 48  
Lake 39.5 40 40.5 41 41.5 42 42.5 43 43.5 44 44.5 45 45.5 46 46.5 47 48  
Louis Garneau 38.5 39 39.5 40 40.5 41 41.5 42 43 44 44.5/45 45.5 46 47 48 49 50
Mavic (US/EU) 5.5 / 38 6 / 38.7 6.5 / 39.3 7 / 40 7.5 / 40.7 8 / 41.3 8.5 / 42 9 / 42.7 9.5 / 43.3 10 / 44 10.5/ 44.7 11 / 45.3 11.5 / 46 12 / 46.7 12.5 / 47.3 13 / 48 13.5 / 48.7  
Northwave 37   38 39 40 40.5 41 41.5 42 42.5 43 44 44.5 45 45.5 46 47 48
Pearl Izumi 38 39 39.5 40 41 41.5 42 42.5 43 44 44.5 45 46 46.5 47 48 48.5 49
Shimano 38.5 39.5 40 40.5 41 41.5 42 43 44 44.5 45 45.5 46.5 47   49   50
Sidi  39 40 40.5 41 41.5 42 / 42.5 43 43.5 44 / 44.5 45 45.5 46 / 46.5 47 47.5 48 48.5 49
Six Six One 38 38.5 39 40 40.5 41 42 43 43.5 44 44.5 45   46 47 48 49 50
Suplest 37 38   39 40 41   42 42.5 43 43.5 44 44.5 45   46   47
Vans 37 38 38.5 39 40 40.5 41 42 42.5 43 44 44.5 45 46   47   48
US SHOE SIZE5.566.577.588.599.51010.51111.51212.51313.514

Reviews & Community

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Sidi Kaos

  • Familiarity: I've used it several times
  • Fit: True to size
  • Size Bought: 45.5 (11 US)

So far so good, comfortable footbed which was the main goal for me, my old Shimano's caused numbness within 10 miles or so, the stiff Kaos footbed fits me better and distributes the pressure much more evenly, it's an amazing difference even after 50+ miles. What is incomprehensible to me is the top of the tongue which is too long, with "teeth" that cut into my leg. The grooves that Sidi cuts into the last half inch of the tongue actually cause the tongue to curve downward, even with higher socks there is a constant "sawing" motion just above the ankle on the lower leg. Just a flat-out design flaw, luckily the padding of the tongue is not present here so I'll be able to cut this part off with an exacto knife. Not a huge deal, the rest of the shoe performs very well, but for $300 this is a major annoyance. From a purely aesthetic POV, the glossy white finish of the uppers is a bit much. I like the perforations and airflow, the graphics are nice, but matte white would have toned it all down nicely.

Sidi Kaos

The tongue is meant to be cut to fit your foot, so it's not surprising that you were uncomfortable until you did so... Sidi doesn't mention this in their instruction manuals for some reason.

Sidi Kaos Air

  • Familiarity: I've used it several times
  • Fit: True to size
  • Size Bought: Euro 48 (U.S. 13)

I made the swich from a pair of Lake mountain clipless shoes to the Sidi Kaos Air (size 48). I am a pretty big guy, 6'3'' 185 lb. The shoes fit great and the carbon composite sole effectively transfers my effort to the pedals. The ventilation from the Air upper is great and my feet don't get soggy with sweat. These shoes were worth the price, especially when I got them during the July 4th 20% off sale!

Sidi shoes

  • Familiarity: I've used it several times
  • Fit: True to size
  • Size Bought: 42

The shoes are great. They are true to size and deliver max power to the pedals. Could not be happier. Will purchase again.