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It’s kind of a Sidi neighborhood.

You can ride your snow bike in regular summer shoes, but your feet will be cold and wet in a matter of minutes and the rest of the ride will be miserable. In other words, don’t. The Sidi Diablo GTX is built for cold, weather riding, so your feet will be just as comfortable while you ride in the snow as they are during a summer ride—maybe more.

The most important feature of the Diablo GTX is the Gore-Tex bootie. This guarantedd waterproof breathable bootie keeps your foot dry from the outside while it allows sweat vapor to escape to keep your foot dry from the inside. The Diablo is also insulated to trap your natural warmth and eliminate numbness. At the cuff, Sidi used stretchy, water resistant neoprene to keep snow and trail debris from getting into the shoe.

Closure is handled by four hook-and-loop straps that won’t ice up or bind in cold weather. At the sole, replaceable lugs and toe spikes ensure excellent traction for years of cold-weather fun.

  • Cold-weather mountain bike shoe
  • Gore-Tex bootie
  • Neoprene cuff
  • Replaceable sole and toe spikes

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Here's what others have to say...


Good Dry. Not Good in Wet/Slushy Weather

  • Familiarity:I've put it through the wringer
  • Fit:True to size
  • Height: 5'9"
    Weight: 142 lbs
    Size Purchased: 43

I've used these many times this year in dry cold weather into the mid 30's and they work great for that. In dry/cold, I'd give these 5 stars.

Did a slushy/snowy ride yesterday and the shoes filled with water 15 miles into a 40 mile ride. There was about 1/4" of water stuck in the shoe, which must have come in from the top instep to toe area.

When I got home, the water would not drain out of the bottom of the shoe, so I'm confident it came in from the top. The ankle strap was sufficiently tight.


great inclement weather boots!

    I love these! I bought them because of a discount I was getting when I bought a new bike but am glad I did and would probably have paid retail for them if I knew how warm and dry they keep my feet during Winter rides. I don't think they have a carbon sole but they definitely transfer power to the crank better than my Dominators do. I also installed the spikes that come with the shoes and they really come in handy if I ever have to carry my bike up slippery climbs...

    Unanswered Question

    I wear a size 44 in Sidi Dragon 3 shoes....

    I wear a size 44 in Sidi Dragon 3 shoes. I understand the Diablo fits a little roomier to accommodate thicker socks, should I still choose the 44 in the Diablo?


    Very stiff

    • Gender:Male
    • Familiarity:I've used it several times

    I bought these shoes with intentions of using them for cyclocross in the cold, rainy Pacific Northwest but despite being warm and dry, they were not conducive to dismounts and running; very stiff and uncomfortable like a road shoe. And being a high-top, I thought would give me some added ankle support but really kept my feet from planting firmly on off-cambered terrain. They were also very heavy compared to the Sidi Spiders I ended up using and after a few laps, they felt like lead weights on the barrier sections. I'm sure these shoes would be awesome for just straight cold, wet trail riding but I definitely don't recommend them for cross or any sort of riding where you'll be hoping on and off the bike.


    great shoes

    • Gender:Male
    • Familiarity:I've used it several times

    I love the design of the shoe. My feet are doing good in temperatures down to 32F. The closures give a good feel and provide great power transfer to the pedals. Don't leave home without them!


    Very Happy!

      Have worn mine two winters with merino wool socks. No problems in the 30's.

      Toes begin to get cold after an hour in the mid to high 20's. Below that I add Gore boot covers with no problems into the teens.


      So Far, So Warm and Dry

        I got these mainly as a "rain" shoe for commuting, and less so for "cold" or wintery (snow) weather. That being said, my prior experience with Gore-Tex lined shoes is that they are far too "warm" for my taste - the bladder holds in the moisture too much - especially in a running shoe.
        Ive used these shoes on several down pour commutes and on a few days with temps in the teens and so for I have had warm and dry feet.
        I wear a 42.5 road shoe and got these in a 42. I had tried the 43 on but they had way too much heel lift. I use them with a standard / thin sock and find that they are fine for my needs.
        The upper cuff / neoprene band can "pop" the velcro if you try to cinch it super tight, but that's easily enough remedied. Dont expect the cuff to keep water out of the shoe if you wear em with shorts in the rain in the summer however.


        Frozen toes

          A very poor winter shoe for the price. I bought them a half size large to accommodate thick socks. In spite of this my feet froze even in mild 35'F weather. I replaced them with the Northwave Celcius Artic GTX which is far superior at 40% less $

          I'm very surprised with this review comment. I wore these all last winter. I was riding, on average, in 15o weather. However, it was only about 30 miles a day (every day of the week). How many miles did you do in them? Im curious because I love them so, but I've only used them in the worst of Utah weathers, for short miles.

          I currently use the Sidi Dominator 5 size...

          I currently use the Sidi Dominator 5 size 45 mega. The extra width is great for relieving hot spots and using a BG footbed & vargus shim. I still have a little room and could fit a thicker sock if needed. A standard width is too narrow and a 46 is too long.

          So the Diablo only comes in 45 or 46 & standard size with some extra room for a thicker sock. Would that equate to a Mega width or smaller? Since I would be using thicker socks & liner socks in cold weather I need extra width & length to accommodate that. I don't want to use booties over my current shoes and rather be able to use the Diablos for cold weather.

          So I am trying to decide weather a 45 would be wide enough or whether I should use a 46 and hope the length is not an issue with thick socks. Too bad they don't offer half sizes or mega width, which would be a better fit.

          Regards Steve

          Answer to my own question. I tried both the 45 & 46 and both are too narrow in the toe box with thick socks or a liner sock & standard sock. With standard socks they are ok, but then there is no air space to help keep warm. Too bad they don't make these in a mega size. I am returning both and will try the Shimano MW80, which is very similar but has a standard wide toe box as in most Shimano shoes.


          warm, dry feet

            got tired of my neoprene booties popping up and my toes freezing, so i got these. toasty warm and keep my feet dry in the snow. well worth the $ if you do alot of winter riding.