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Fi'zi:k R3B Uomo Boa Shoe - Men's

Sale $269.95 $299.95 10% off

Item # FIZ002G

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Item # FIZ002G


Though technically a mid-range shoe below the R1 Uomo, the Fizik R3 should win the award for the best value for money since not only is it lighter than the R1, but it's also easier on the pocketbook.

The first flourish you will likely notice is that the R3 uses the Boa IP1 closure system. That’s significant since the Boa is one of the most effective ways you can secure your shoes with a minimum of weight but a maximum of comfort. The system allows you to micro-adjust the fit without causing any pressure points or potential hotspots. And best of all, you can make any adjustments on the fly since the dial works easily in both directions, that is whether you want to tighten the set-up in preparation for a final sprint, or if you want to loosen them after several hours in the saddle on a hot day. The uppers are made from Microtex. Stepping away from the use of kangaroo leather, Microtex is a synthetic fabric that offers both durability and comfort. It is also immensely breathable, in large part thanks to the laser-made perfect perforations. At the lower end of the foot, there is a hook-and-loop strap to make sure you can secure the shoe exactly according to your preference. It is made from a high-tech Italian sail cloth, which gives the shoes that extra touch of class.

For the insole, the shoes make use of the Fizik Cycling Insole, which is an ergonomically designed EVA insole complete with a metatarsal pad for added comfort. It will provide support and just the right amount of cushioning. You won’t have to worry about hotspots developing since the insole works completely in conjunction with the outsole. The unidirectional carbon sole offers a stiffness that will help you feel the responsiveness of every pedal stroke. The sole is compatible with any three-bolt system.

  • Laser-perforated seamless Microtex upper
  • Boa IP1 dial closure
  • Hook-and-loop forefoot strap
  • UD carbon-fiber sole
  • EVA insole with metatarsal pad

Tech Specs

Upper Material:
laser perforated Microtex
Boa IP1
UD carbon fiber
Cleat Compatibility:
3-bolt road
Claimed Weight:
[size 43] 230 g
Recommended Use:
road cycling, road racing

Size chart


36 3 1/4 4 1/4 230
36.5 3 3/4 4 3/4 233.5
37 4 1/4 5 1/4 237
37.5 4 1/2 5 1/2 240
38 5 6 243.5
38.5 5 1/4 6 1/4 247
39 5 3/4 6 3/4 250
39.5 6 7 253.5
40 6 1/2 7 1/2 257
40.5 7 8 260
41 7 1/4 8 1/4 263.5
41.5 7 3/4 8 3/4 267
42 8 9 270
42.5 8 1/2 9 1/2 277
43 8 3/4 9 3/4 277
43.5 9 1/4 10 1/4 280
44 9 3/4 10 3/4 283.5
44.5 10 11 287
45 10 1/2 11 1/2 290
45.5 10 3/4 11 3/4 293.5
46 11 1/4 12 1/2 300
47 12 13 303.5
48 12 3/4 13 3/4 310

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Avg. ride time: 9h 56m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Very comfortable if your heel will hold

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: Runs large
  • Size Bought: 42

Construction quality is great, and the shoes feel excellent when putting them on--the upper really hugs your foot. The small toe strap combined with BOA dial allows for a very comfortable fit that feels very secure, except for heel retention. It's worth caveating that everyone's foot is different and so not everyone may experience this, and I also did not install cleats, so heel slip may not be a problem on the bike. But on the latter point, it's a bit of a Catch-22 because returning shoes once the cleats have been installed might be more difficult. I had the original R3 before these, and the new model is much more comfortable overall (the original had a ridiculous amount of arch built into the last), but the heel retention issue is new for me.

Great Fit, Super Light

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: 10.5

These shoes are great. Perfect fit, super light and the boa system works well. I believe they run true to size and are not to narrow...

Very Optimistic

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: True to size
  • Size Bought: 45 cm

4 stars so far only because I have used for one ride. The power transfer is excellent and it is very comfortable! I am not sure about the breathability yet. There are plenty of perforations on the upper but no vents on the carbon sole. The BOA system works very well and can adjust to tighten and loosen the fit. Will most likely (as usual) swap out the insole with a specialized BG.
I am returning because one of the BOA dials is defective (cable running underneath the BOA fixture). The customer service at Competitive Cyclist is great as usual for sending a replacement pair and a shipping label for sending these back! Good job. Will provide update after more rides but this is definitely worth looking in to for an upper/mid range shoe.

Excellent shoe

  • Fit: True to size
  • Size Bought: 44

After Specialized shoes for years, S-Works, Pro, I decided to try Fizik after reading the reviews. I ordered the same size I wear in Specialized and the fit is comparable, the shoe is very comfortable and I like the classic look.

Italian style and feather lite

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: 42

Great fit and finish. Boa system makes adjustment easy. Carbon bottom provides stiffness. However, don't walk too far on gravel or they will scratch. Without a doubt, one of the lightest shoes on the market.

Spectacular road shoes

  • Fit: True to size
  • Size Bought: 42.5

25+yrs riding in shoes including Carnac, Rocket7 (semi custom), DMT, and others, can say these are some of the best straight out of the box. The high fit and finish are the first thing you notice. About 300 miles in and the shoes feel fantastic on my feet, light to spin, and these clearly helping to generate additional watts on both the flats and the climbs by rounding out my pedal stroke.

Heel lifts out of shoe

    I'm a size 10-10.5 and the 43's fit great, except when I put pressure on the ball of my foot (off bike), my heel lifts a good inch out of the shoe. Even when super tight this still happens. Maybe just me, but going back to strap enclosures.

    Unanswered Question

    Hi !
    In sidis im Eur43.5
    Northwave Eur 42- us 9.5- cm 27.5
    Sneakers new balance 990 im Eur 43- us 9.5 -cm 27.5 And they all fit just right.
    According to the size cart above for a us 9.5 i should get a 42.5. Or should i get 43? Do they run small?
    Please compare it to some other bike shoes or sneakers so i can have an idea of what size should i get. Thanks. Gino

    light, stiff but comfortable!

    • Familiarity: I've used it several times
    • Fit: True to size
    • Size Bought: 43

    After wearing Sidi's for many years, was drawn to the lightweight, comfort inherent in the Boa closure system, and clean look - and these have lived up to my hopes/expectations!

    Hi ! What size on sidi's do you wear?
    In sidis im Eur43.5
    Northwave Eur 42- us 9.5- cm 27.5
    In my running new balance 990 im
    Eur 43- us 9.5 -cm 27.5
    And they all fit just right.
    Could you please compare it to some other regular sneakers and bike shoes?
    According to the size cart above for a us 9.5 i should get a 42.5. Or should i get 43?
    Please compare it to some other bike shoes or sneakers so i can have an idea of what size should i get.
    Thanks. Gino

    What size Sidi do you wear. In between sizes usually.

    Are these the 2015 or 2016 models? I noticed on the Fizik website that the 2016 have a black tongue paded area.

    2016, i have a pair of 2015 ones and their insoles are white. The 2016 ones have black insoles.

    Good but not great

    • Familiarity: I've put it through the wringer
    • Fit: Runs small
    • Size Bought: 43

    I have used
    sidi's for the last 20 years and thought I would give another brand a try since there were some things about my last pair I was not thrilled with. The fiziks are narrow for there size. If your foot is a eee like mine look elsewhere. If you run your hand on the inside if this shoe you will feel just how rough it is. The Sidi is so much smoother and your feet can feel the difference. However the worst part of this shoe at least for me is how high up the ankle collar comes on the inside. It does not have the same radius as the outside of the shoe so when you ankle it drives right into the skin above the ankle. It seems to be breaking in but it is annoying. On the bright side the closing system in great and easy to use on the fly. The shoe feels very stiff and is all business when you put the hammer down. The just aren't as comfortable as I had hoped

    Great Shoe

    • Familiarity: I've put it through the wringer
    • Fit: True to size
    • Size Bought: 44

    I bought the R3B to replace a pair of S works. They fit great out of the box. I love the white very simple classic look. The Boa provides secure hold and the shoes breath very well. The carbon sole is stiff and transfers power for me extremely well. I wold definitely recommend them. Great shoe and of course made in Italy.

    Great Performing/Looking Shoes

    • Familiarity: I've put it through the wringer
    • Size Bought: 42

    I've been training and racing in these shoes for about 3 months now and they've been great. The length is a little off for me and I had to return a pair to get one that fits a little snugger. They look awesome. You can read my full review with photos here:

    I have a specialized expert road shoe size 45.5 how are these in comparison to the specialized shoes are they true to size? because normally i would be a 45 and spec u have to half size up...

    Avg. ride time: 5h 23m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

    As close to a perfect shoe as there is

    • Familiarity: I've put it through the wringer

    There are some things certain folks just do better than others. And when it comes to cycling shoes, it's Italians. Awhile back I was looking for something more comfortable in a cycling shoe and decided to go with something a little wider (Giro Factor HDs) as my feet tended to feel a bit cramped in my previous shoes. At first the change seemed to suit me well however over time I began experiencing pain, discomfort, numbness and my personal little foot hell, hot spots.

    I decided to give these babies a shot even though some of the reviews described them as a bit narrow and man am I glad I did. It's true they fit a little more snug but the shape is just damn near perfect. Don't get me wrong, like any cycling shoe they aren't too comfortable to walk in but after a couple thousand miles in them I'm confident in saying they're the best all around shoe I've ever tried. Comfort, check. Easily adjustable on the fly, check. Stiff where it counts and soft where it doesn't... check. And do they look good? Check Check Check.

    I doubt I'll ever try another shoe again. These are pure foot sex.

    Does this shoe have a manufacturer warranty like the R5 Uomo? ~Thanks

    I can only answer for the BOA system which they will replace, and repair on any product with the BOA system. So any other part of the shoe I am not sure. The BOA system is a great product.This is the BOA warranty information page.

    Comfort, Performance, and Style.

    • Familiarity: I've used it several times

    bought these shoes to replace my Shimano shoes. These will be used mainly to do some indoor cycling. Very well constructed and the shoes are great out of the box. No break in period needed. The Boa system is sturdy and the shoes look great.

    If the shoe fits..

    • Familiarity: I've put it through the wringer

    Then wear it! Made the switch from Fizik's R1's and I couldn't be happier. The boa system gives it a snug fit, and the seamless upper makes the shoes look so clean. The shoes are just as stiff as the R1's, and they felt light and snug on my feet. Buy the white and be the envy of your group ride. You wont be disappointed!

    Ride like a pro

      Wow... Best shoes ever! The new Boa system is amazing. Very snug fit and stiff. Super light weight and stylist. Went out for a 4hr ride the first time in them and no issues. Feels like a shoe I've used for years. Looking forward to many more great rides in them to come.