Posted in Cycle

SIDI is consistently one of the best-selling cycling shoe brands for Wiggle and is a favourite of many riders in the pro peloton. If you get a pair that fits correctly, you will experience a superb level of comfort and performance.

We've produced this guide to make it easier to understand the SIDI fit. Cycling shoes don't 'break in' as leather shoes do as they're precision-moulded for optimum power transfer. They need to feel good straight out of the box, otherwise, you'll end up with discomfort and even possible injury further down the line.

How to find your perfect SIDI shoes

SIDI Cycling Shoes are well known for having a comfortable fit straight out of the box but if they're not right, they're not going to get any better with continued wear. 

If you have the right size, you will benefit from a snug fit for optimal power transfer but you'll also have around 5mm of wiggle room in the toe box for comfort over distance.

SIDI cycling shoes bike shoes

How do I know which size to pick?

Contrary to popular belief, SIDI cycling shoes sizes are not smaller than the competition. They are simply made more precisely.

The Wiggle SIDI size chart can be found on every SIDI product page to make it easy for you to refer to. There's 6mm difference between full sizes so half-sizes are also available to ensure a great fit for most riders.

The standard SIDI shoes are based on a 'D' width foot.

The optimum fit-test:

Before you start, make sure you are wearing the same kind of socks that you would normally wear for cycling.

Put on your cycling shoes, and stand upright in them; then try to lift your heels up. If there is any gap between the heel and the back of your ankle, then the shoes are too large, and they'll feel sloppy when you are riding. 

If your toes touch the end of the shoes when you are standing upright, the shoes are too small. You should be able to wiggle your toes.

Additional SIDI fit options

SIDI Mega fit

SIDI has designed its range of Mega range of shoes for those who need extra volume.

The Mega range has 4mm of extra width across the ball of the foot which translates to an EE-EEE width (wide/extra-wide). The heel cup is also wider and there's a higher instep.

Our top-selling Sidi shoes available in a Mega fit are the Sidi Ergo 5 Mega Matt Road Shoes (Wide Fit) for road cyclists, and the Sidi Dragon 5 SRS Matt Mega MTB Shoes (Wide Fit) for mountain bikers.

SIDI cycling shoes bike shoes

Women's-specific SIDI fit

We often get asked if men's SIDI shoes will fit women. The answer is yes, but only for women with consistently wide feet from the heel right through to the forefront. 

SIDI has been making women-specific shoes since the 1960s. According to their research, women have an entirely different foot shape to men so, for the majority, a women's specific shoe will fit a lot better.

The mould (a.k.a. 'last') for a women's cycling shoe is not simply a smaller and narrower version of the men's option. The SIDI women's lasts also have a narrower heel and ankle to accommodate the smaller overall volume of the foot.  

All the same technologies and fit systems available across the SIDI range have been made available in a women's fit.

The most popular choices are the Sidi Women's Wire 2 Carbon Road Shoes for road cyclists and the Sidi Women's Trace 2 MTB Shoes for mountain bikers. 

Sidi fitting and retention systems

SIDI shoes feature a number of unique fitting and retention systems, which help to provide the rider with a truly personal fit and feel.

Sidi Heel Cup

The SIDI Heel Cup is an adjustable heel retention device, which improves the fit at the top of the heel cup, by closing the back of the shoe securely around the rider's ankle.
The heel retention device improves the fit at the top of the heel cup


SIDI Tecno 3 Push-Dial Closure

The SIDI Tecno 3 system wraps a monofilament line, (which is similar to fishing line) around a ratcheting dial buckle. The fine-tooth ratchet allows for smoother adjustment, and the lacing system provides more even pressure distribution.

The Tecno 3 system adapts the upper of the shoe to the shape of the foot, providing a customised fit.

Check out our range of Sidi Wire Carbon Road Shoes which use the Tecno 3 Push Dial System. If you're a mountain biker, you'll want to take a look at the Sidi Dragon 5 SRS Matt MTB Shoes or the Sidi Tiger Carbon MTB Shoes.

Soft Instep 4 Closure System

The Soft Instep 4 Closure refers is a wide strap that passes over the upper part of the foot; securing the foot underneath the well-cushioned soft foam tongue.

The height of every individual rider's instep is different. In order to get the best fit, SIDI uses an adjustable ratchet on one side of the strap and a Techno-3 Dial or ratchet on the other side; so that you can tailor the position of the wide strap to be centred over your foot.

The technology means that you accommodate a wide range of foot shapes and instep heights.

Pressure is spread evenly over the arch area

Cleat and pedal compatibility

SIDI road bike shoes are compatible with all 3 bolt road cleat fixings. This means you can use Look (all models), Time (RXS/I-Clic/Expresso), Shimano (SPD SL), Ritchey (Echelon), Wellgo, Campagnolo Pro Fit and Mavic cleats with Sidi shoes.

SIDI mountain bike shoes fit with all 2 bolt mountain bike cleat fixings. For example, all Shimano SPD, Time Atac, Crank Brothers, Ritchey, Speedplay Frog, Look Quartz, Wellgo SPD models, BBB, and many more.

If in doubt please contact Wiggle Customer Services who are happy to help with any questions.

SIDI cycling shoes bike shoes

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