Sidi Kaos Air Cycling Shoes - White


Size Guide

Sidi Footwear Size Guide
3 - 4 -
3.5 37 4.5 23.5
4 38 5 24
4.5 38.5 5.5 -
5 39 6 24.5
- 39.5 - -
5.5 40 6.5 25
- 40.5 - -
6 41 7 25.5
6.5 41.5 7 -
7 42 8 26
- 42.5 - -
7.5 43 8.5 26.5
8 43.5 9 -
8.5 44 9.5 27
- 44.5 - -
9 45 10 27.5
9.5 45.5 10.5 -
10 46 11 28
- 46.5 - -
10.5 47 11.5 28.5
11 - 12 -
11.5 48 12.5 29
12 - 13 -
12.5 49 13.5 -
14 50 15 30
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Average connection time 25 secs

Average connection time 25 secs

The Sidi Kaos Air Cycling Shoes offer everything followers have come to expect from Sidi with a high quality fit and technically advanced design. The Sidi shoes feature a Vent carbon sole with air intake that provides more rigidity than a standard nylon sole. Soft Instep 3 and the Tecno-3 push closure system provide a customised and adjustable fit for optimum comfort.

Soft Instep 3 System: This system is a wide, anatomically curved strap combined with a soft, thermo-formed EVA pad that distributes pressure evenly over the instep area. The Soft Instep Closure System is adjustable from both sides, to perfectly centre the EVA pad over a high or low instep. The system eliminates the need for the High Instep Extender. The Soft Instep Closure System is replaceable.

Tecno-3 System: Sidi’s Tecno-3 System dials in the fit along the entire length of the shoe, adapting the upper to the shape of the foot for a customised fit. Sidi’s famously reliable and replaceable closures are improved by an all new proprietary Sidi Wire material that is completely non-binding for intuitive and effortless on-the-fly adjustments. Like most Sidi small parts, the Tecno-3 buckle is serviceable and replaceable.

Caliper Buckle: The micrometric closure is adjustable by lifting the central buckle. In order to completely open, lift together both side buckles, or push the centre button to slightly loosen one tooth at the time. The system is also adjustable during a race.

Sidi Heel Cup: The reinforced heel keeps the foot in an optimal position and avoids the shoe being deformed by extreme performance or prolonged pressure. For walkability, Sidi cycling shoes include a replaceable polyurethane heel pad and a comfort fit insole.

An anti-slip toe insert and replaceable polyurethane heel pad are incorporated into the Vent carbon sole, for walkability. The Vent carbon sole uses a standard 3-hole drilling pattern for compatibility with the best pedal systems available, and includes a printed 10mm lateral and fore/aft cleat alignment scale on the sole as well as the Look Memory Eyelet for easy cleat alignment and replacement.

Key Features:

  • Synthetic upper
  • Vent carbon sole with air intake
  • Soft Instep 3
  • Tecno-3 system
  • Sidi heel cup
  • Replaceable heel pad
  • Custom fit insole

Please Note: All buckles and mechanisms are replaceable.


How long will it take to arrive?

Please check the stock availability notice on your item when placing your order. This item is: .

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Please allow 10 working days from dispatch of your order before notifying us of any late deliveries.

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Please see our returns policy.

Customer Reviews

Overall Rating : 4.67 / 5 (3 Reviews)
  • 2 5 star reviews
  • 1 4 star reviews
  • 0 3 star reviews
  • 0 2 star reviews
  • 0 1 star reviews

Top Customer Reviews

Where reviews refer to foods or cosmetic products, results may vary from person to person. Customer reviews are independent and do not represent the views of The Hut Group.

Top Quality

You will never be let down by SIDI, they are the choice of pros! Really comfortable and the two ways of tightening are spot on to use as you go along. They look class and even though they are classed as AIR, they aren’t too cool for our British weather! Buy them!

Durable cycling shoe?

4 star rating might be up-rated when I have chance to see & use. Overseas for 2 months, shoes in UK. I expect them to be a long lasting high quality product based on previous experience with Sidi Tecno 97, used for almost 21 years and still going strong. Have chosen a size up this time (47) for 5 mm extra length and some extra volume as size 46 for me is sometimes too snug a fit.

Great Value Shoes

These shoes are a great shoe for their price. I received a day later than I would have liked and had to ride the Gran Fondo in my old shoes but they did the job. Since I have received the new shoes I have enjoyed a more comfortable ride with less stress on my feet than I thought possible. These shoes have turned out to be quite comfortable over longer distances.