Bont zero cycle shoes review

A review of Bont Zero cycle shoes.

Manufacturer Features:

  • Claimed weight: 220 grams per shoe. (I’ve weighed with Speedplay cleats on, and it came to around 580grams. They were 80grams less than my Mavic Tourmalet with same cleats on)
  • “Fully Heat Mouldable Chassis utilizing Epoxy Thermoset Resin”
  • Sole: Unidirectional Carbon to improve aesthetics of sole and further reduce weight of shoe
  • Upper sole: “Durolite Outer Skin for its extremely durable nature and light weight”

I had a pair of Mavic Tourmalet cycling shoes that had lasted since 2009. They were light, comfortable and got good value for money. But, they needed replacing. In terms of cycling shoes, my criteria are:

  • Comfort
  • Weight
  • Aerodynamics
  • Power transfer (hard to measure)
  • Looks

I don’t need cooling vents (my feet are always cold not hot) Nor do I need any thing to tighten shoes before a sprint.

I did toy with the time trial specific Bont Crono TT shoe, but was put off my higher price, non UCI compliance and wondering whether that would be a problem for CTT.


I chose the Bont Zero because they were lightweight (claimed 540grams a pair) and also claimed to be aerodynamic shape – negating the need for overshoes.

Another selling point was that they had heat moulding capacities so it promised hope of a good fit.

First off, I ordered a pair of 46. I put them on and they were a bit too tight, so I sent them back and got the slightly bigger 46.5 (this was same size as my Mavic’s). When these came they were still a little tight in the width. But, I didn’t really want to get longer shoes than necessary (no point getting bigger and more weight if you don’t need it)

The dial is easy to use for tightening up the shoe.

I wasn’t sure whether to send back and get bigger 47 size. But, I thought I could deal with the width through the heat moulding process.

I put in oven at 80 degrees for 20 minutes and put on two pairs of socks to make feet as big as they might be. I then put on warm shoes and stood around in them.

The heat moulding process did work to a certain extent – you can see the outline of my outer toes where they have stretched the material. However, it didn’t seem to have any effect on the side of the shoes at the widest part of my foot.


The biggest problem with these Bont shoes has been the comfort. After an hour or so, it starts to feel tight on the outside of the foot. After 3-4 hours on bike (especially when hot) it becomes uncomfortable. I’ve never had problems with badly fitting cycle shoes before, it’s not nice. I haven’t got any blisters or anything, but it distracts you from cycling.

I managed a few 100 mile time trials on these shoes this summer, but more difficult were five hour training rides over bumpy roads.

The problem is once you have done the heat moulding process, you can’t send the shoes back. From testing them, I never really anticipated they would be as uncomfortable as they are – because length wise they are quite long.

Once you have done the heat moulding process – there is no possibility of ‘give’ or wearing them in. They are rock solid, I have tried scrapping away with a knife, but that proved unsuccessful too.

Riding in rain

The shoes do well in wet / spray  conditions. The surface and aero flap help keep a degree of water out of the shoe. The manufacturers claim that in wet conditions the shoe doesn’t absorb water.

Riding in heat

The shoes have less aero ventilation that most shoes.  But, I had no problem with sweaty feat. However, my feet are always on the cold side anyway. To me it was an attraction of shoe that they had less ventilation.


bont zero

Low weight is definitely good. They look fairly minimalistic and the base of the shoe is strong carbon fibre – one piece moulded.



It looks aerodynamic – much more aerodynamic than many other cycling shoes. As a  time triallist, this is a boon. I don’t know whether they are quicker with aerosocks or without.

The flap is not absolutely flush. But, it does a pretty good job in covering the dial.


It’s a very good shoe. It ticks a lot of boxes – low weight, aerodynamic, looks good, easy to clean and well made with strong powerful power transfer. But, from a personal perspective comfort is a real show stopper. They only come in one size of width. The problem is I don’t even know whether a bigger size would fit me or not. The heat moulding process was not successful for myself, and the last thing you want to do is spend £250 on a pair of shoes and a few weeks later realise they don’t fit very well. The problem is I never anticipated comfort problems from trying them on.

On the positive side, they are OK for hill climb season – and low weight is most important here. But, I might have to bite the bullet and buy a second pair for long distance cycling. It probably won’t be another pair of Bonts – even if they are low weight and aerodynamic. Comfort trumps all these other factors.

Bont Zero

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9 thoughts on “Bont zero cycle shoes review”

  1. I had a similar experience with Bonts (a different model). I wasn’t convince the heat moulding had any effect, despite at least 5 attempts, and pushing the boundaries in terms of raising the temperature.

      • I have a similar problem with Bont Vaypors. They are omfortable enough when wearing off the bike, but after an hour’s riding my feet arre completely numb. I think it’s due to the extremely stiff sole. Like other people, re-moudling makes no difference.

  2. I guess this is the biggest problem with buying shoes online. I bought my admittedly much cheaper Bont Riots from an actual shop and got to talk about them and try them on before buying. Fortunately they fit my feet incredibly well without any moulding as yet so goodness knows how good they would feel with some oven time.

    I think there are some items where it pays to buy from a shop where you can try before you buy- helmets and shoes being high on the list.

  3. I think even if I bought in shop I would have made same mistake. I could have sent back for bigger size, but thought they would be OK

  4. I’ve got these – I really like them, except I swapped the included insole for something better (shimano).

    A bit late now obviously, but Bont do a ‘wide fit’ as well (they also do ‘narrow’), which it sounds like is what you need – i.e. extra width without more length, for a given size. Perhaps worth a try if you can find a shop that stocks all three fits (narrow, normal, wide).

    That said, I know Bont’s are a bit love/hate – some people just don’t get on with them, probably because they’re so stiff all over and therefore not very forgiving of a poor fit.

  5. Yes Tejvan, these shoes are small cut size, i was advised of sizing up two sizes , and indeed it took alot of heat moulding and the end of a screwdriver with a hairdryer to push the feets outer end.
    the other thing i noticed that you guys still have the original bont inserts, you should try the spez inserts (got some reds) that would be way way more comfortable for long rides.
    The other thing is to check the grub screws for your cleats if in case it protrudes out (being too long) into the shoe.
    Overall a good shoe, just sizing and insert is an issue.

  6. I bought a pair of these online in size 41 in August, and wow, best shoes ever, after decades of sore feet in many different brands of shoes.
    In size 47 you might also find these the most comfortable.

  7. Bont molding tips and tricks:
    #1 leave shoes in the oven longer than 20 minutes (30-35minutes) At the 160°F temp. If that doesn’t work, try…
    #2 Or try a slightly higher temp (I’ve gone to about 180°F with no negative effects)
    #3 Wearing thick socks for more room works well, but taping wood shims fashioned from paint stirring sticks to problematic areas of your feet while wearing thin socks over them works better.
    #3 Absolutely stand on a stair with the front part of your feet to get full pressure where you need it when molding.
    #4 “Dynamically” mold them. While standing on the stair, slowly squat down to mimic a cycling position then rise up-do this for a few minutes straight. I borrowed this technique from a Bont speedskate user. It works really well!

    I’ve tried 3 different sizes of Bont shoes In 3 different models, Overall what I’ve learned is length is crucial-you do need anywhere from 5-8mm more length than your foot/sock measure because molding can’t do much lengthwise to the shoe. I’ve settled for using a 46.5 shoe with a thin sock for short intense races, and a 47 with a medium sock for longer rides. Feet will swell during the ride, and Bont shoes have little to no padding, so your feet will encounter hard boundaries when they swell.
    You also have to try first riding with the BOA dials completely slack, then as you ride, tighten them a click or two every 15min. Once you feel discomfort, back off a click or two. Using them this way I’ve observed any pain/numbness that occurs during the ride completely disappeared. Yes, the upper might feel “loose”, but due to the bathtub shape of the sole, when you stomp on the pedals your feet will remain stable.


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