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PartnerNews | Atomic Bootfitting

A program for your feet

by Sebastian Siep 12/03/2024
The most important piece of equipment when skiing, even before the safety half, is the complicated part that enables your legs and feet to connect to the gliding plates. Although all of the skier's movements are transferred to the skis via this connection and this influences the quality of the skiing, too little attention is usually paid to the exact fit for your feet.

We are talking about ski boots, which are available in many different colours, with one or two useful buckle comfort gimmicks, but also in different fits. So there should be something for everyone, and yet many people know that uneasy feeling before or while practising our favourite pastime. Because the seriousness of every ski day begins when you put on this pretty piece of plastic. It's not that comfortable at first, then somehow it is and then you just want to undo the buckles and get out for a moment and rest your feet. Somehow it pinches or your toes are cold, you're not standing properly today or, in the worst case, something is cramping or there's even pressure pain in problematic areas. Finding a perfect fit with an off-the-peg product is like a stroke of luck: either the foot fits perfectly into the manufacturer's standardised idea and you get very good advice with the option of testing, or you are more likely to be pain-resistant. Because our feet are very individual. Not only do they differ from side to side, i.e. left and right, but they also change over the course of the season and even within a day. What's more, not only does the material lose its shape and provide less support under relaxation, but the foot also gives way under strain, injury or age and changes in shape and size.

A good ski boot purchase starts with the size selection. Rather tight is right, but how tight is still healthy or bearable? Last season, Toni and Klara visited our partner Sport Conrad and reported on the ski boot buying advice. PowderGuide partner Atomic offers not only ski boots but also the necessary personalised advice and support. This includes boot fitting expertise in the sales network of the ski boot collection for racers and piste racers through to ski tourers. There are several sports shops with specialised workshops where those suffering from ailments can do something good for their feet.

Last winter, we tested the Atomic boot fitting program, which is based on the specific adaptable properties of the ski boot and the expertise of the ski workshops. The partners are listed in the Atomic Pro Centre and can be easily found by entering the address on a map for your region.

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Problem area analysis

When a free morning was finally in sight, I picked up the phone. The next day was a hairdryer day - the perfect opportunity to take care of the equipment. And so I make an appointment for an Atomic bootfitting experience. The following day, I find my way to Meiringen at the foot of the Hasliberg ski resort, to Pollux Sport. The traditional sports shop is owned by Bernhard Fahner, or Beni for short. Beni is a mountain guide and has many years of World Cup experience from the ski racing circus. He has been fitting his own ski boots and those of his customers for decades. He welcomes me into his workshop.

After he takes a quick look at the adjustments to my old ski boots that I've brought with me, he wants to know what I usually use them for. Well, skiing! But also walking sometimes. So freeride and freeride tours with the odd kilometre on piste. Occasional ascents and bootpacks (I won't even mention the umbrella bar marathons). On the descent, a rather powerful skiing style with robust technique in any snow. Central to backseat position instead of a confident racing crouch. In general, I'm looking for a stiffer boot with progressive and direct toe-off stiffness in order to retain the ability to make corrections.

A foot scanner is particularly helpful in determining the exact size and shape of the foot. The scanner records precise measurements such as length, width and height and provides an exact image of the individual foot shape. After a subsequent detailed assessment of my feet, he realises that they are properly used and have the following characteristics as problem feet, or rather project feet:

My feet are different lengths and rather flat, but very wide and shaped like a slight hallux on one side. I have sensitive high outer ankles and thick ankles, with a rather normal heel on a long lower leg and, as he literally states, "no calf". But we can manage that, he says. In my experience, it's not easy, but that's why I went for a professional.

First modifications to the ski boot shell

We begin with the preparation and start with a customised insole on the vacuum pad. There, the cushion adapts individually to the footprint. He also pulls the inside of the resulting impression into the arch of my foot. This is to prevent the ankle from sinking later on and also to enable a clean fit and therefore well-distributed pressure on the inside edge of the ski. The soles are inserted and pulled into the new mould. Next, my beloved merino wool ski socks are swapped for very thin, compression-type socks. They should slip less when skiing. All right, I'll give that a try.

Let's finally get to the boot. For my splayfoot with inward-sinking ankles, I need space in the forefoot area, but I also need this volume to be kept flat and closed well from above. For this I would like to test a boot with a BOA closure system, which Atomic has provided me with.

It's worth mentioning straight away that the Hawx XTD will be available in three shell volumes per length from this season (2023/24). The Prime is the middle version and has a last width of 106 mm for my size Mondo 29.5. According to the results of the scan, this won't be enough in terms of width, but after the new positioning of the foot with the insole, it also seems to be within reach for later shell adjustments and there isn't too much space above the back of the foot for a good shell closure in the forefoot area. And so I first force myself into the boot in its raw form, close it and "flex" a little in the template. The fit is not yet perfect, but Beni agrees with me about the inhomogeneous nature of the forefoot stiffness. "A "booster" (GOTW Boosterstraps) must always be attached." The top closure on the shaft comes with a solid Velcro fastener strap.. However, Atomic has wider elasticated race straps for replacement, which we will replace the factory strap with. Then, luckily, I can get out of the boot again, and not for the last time this morning.

Fitting the inner boot

In my experience, this is unusual, but the liner is already being made. The Atomic Mimic Liner is the centrepiece of the boot's customisation. In addition to the special ankle zones and a flexible insert in the calf area, which is intended to facilitate the stride movement, it also offers height adjustment of the tongue. This is intended to provide individualised support for the ankle joint position and targeted support at the shin support. The tongue, which is hard on the outside, is attached to the liner in the forefoot with a Velcro fastener. Small markings show me the selected "high" position. This means that the plastic tongue is pulled back far enough to fit under the buckles and the strap, but not too high above the edge of the shell to be ineffective, in order to evenly absorb the pressure from the shin and guide it into the shell.

The Atomic Mimic liner is made of thermoformable plastic foam in several areas and can be individually adapted to the shape of the feet when exposed to heat. And while the liners have to be heated in the oven at 80°C for several minutes, we also tape my problematic areas on my feet. Pads are glued to the metatarsophalangeal joints, the outside of the Jones bones and the ankles. As I will also be walking in the boot, there is a toe cap for each foot. Now the tight sock is carefully put back on so that nothing slips and I can get in easily when the liner is ready. Putting on the sock is a somewhat tricky and lengthy process, but there is no more waiting time when the warm liner comes out of the oven. This is now quickly placed in the shells with the insole and I step into the still hot liner with Beni's help so that everything fits properly and nothing hardens crookedly. The shells are closed slightly and I assume a downhill-like position on a small wedge. It is of course very tight with pads, swollen liner and shell still in its raw state and then takes about ten minutes to harden until I can finally get out again. The liner is now moulded to my foot.

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Now socks off, all the compounds off the feet, socks back on and back into the ski boot. Yes, somehow better, but that's not it. Before we tackle the shell, we need to give my lower legs, with their non-existent calves, more guidance in the shell. Because before I feel the wider Atomic Racebooster, which has now been fitted, I still have almost a finger's space to the edge of the ski boot at the front and back. So I get out again and attach the available Atomic rear spoiler to the back of the Mimic liner and get back in. Better, not ready yet. The upper buckles only close over the outer flanks of the shinbone at the front. Out again and we stick a hard foam pad from Beni's accessory equipment on the tongue. Back in and voila, now the pre-tension is really applied to the calf and I can press diligently into the shell, which clearly shows me the remaining points for adjustment.

Reduce pressure with heat

Once we have decided on the order of the points, I can take turns getting in and out of the boot at least three more times. The shell is clamped in without the liner and the hot air gun is used locally to heat up the areas where my foot wanted a little more space. The Atomic shell made from recycled polyurethane (PU) is relatively easy to deform locally, says Beni. And so, step by step, we adjust the points in the shell. After the metatarsophalangeal joints and the outer ankle were already well adapted, it turned out during running tests with open walking mode that my big toe made it onto the shell. As a result, the shell was even lengthened a little locally.

I step into the boot for the penultimate time, because now that all the side pressure points have been removed, I can feel the edging for the first time. Before I even realise that I'm squirming a bit, Beni asks me if I'd like to try lateral heel wedges again, as I did in my old shoes. Of course, they've always helped me a lot. And so I get out again and the plastic wedges from his workshop repertoire are glued to the insole under the inner shoe. They help to prevent the ankle joint from buckling on the inside. The inner ankle of my flat foot thus moves noticeably less and stays in the shell where it belongs. The lower leg has a much more direct influence and you lie noticeably more firmly on the side of the upper. The edging is much more direct. Nevertheless, I want to get out of the boot for good now and only want to get back in for the first test on snow, for which I now have high hopes. Beni agrees that any detailed problems that arise can then be tackled in further sessions.

Ski boot on! Ski boot off! Sustainable?

Even though my feet needed a break after the 'eternal in and out', the time flew by with the accompanying intensive conversations about equipment, experiences in skiing and the further developed sports articles. In addition to the detailed impressions of my feet and the pressure they felt in my untreated ski boots, I will always remember his perspectives. While I'm still thinking about how to repair my old ski boots so that I can use them as sustainably and for as long as possible, his preferences are different: "A big step towards sustainable outdoor sports would be, for example, to reduce all labels and tags on every item, no matter how small, or to replace them with digital solutions".

For me, the argument is at least as good as the ski boot that has now been customised. A bootfitting workshop that individually replaces the individual parts of the boot and, above all, reuses them for other customers, would also ensure resource efficiency with less packaging material and ultimately less stock of unused parts for users at home and in the workshop.

Since then, I've only been back once to change the tongue of the liner, as the first one left too much volume over the back of the foot for the power strap. I took the old tongue with me for the time being to test it once or twice, but then I announced that Beni could add it to his workshop repertoire so that he could hopefully install it on the next liner.

The current Atomic Low-Volume Race tongue is thicker and was simply attached to the liner via the Velcro fastener; the BOA fastener is now much more direct. In addition, the pressure distribution on the shin is even more even when the buckles are closed thanks to the thicker tongue. Finally, Beni mentioned that further stiffening of the shaft with an additional plate under the buckles would bring further improvement if the current setup wasn't enough for me. I've been busy testing the boot for the rest of the season and will report back soon.

Conclusion

Most of us know the unpleasant feeling of our ski boots pinching somewhere. In the worst-case scenario, in several places at once or so badly that enjoyment falls by the wayside. Anyone whose delicate little feet don't happen to conform to the manufacturer's standard should consider having their ski boots customised.

I can already say that there is a lot of detailed work involved in this boot fitting program, which demands a lot more from the boot and the skier than previously assumed. The Atomic boot fitting program is completed with the expertise of the workshop. Beni always had a technical solution ready for all the problems he recognised in addition to the product repertoire and draws on his many years of experience - from which my feet in particular benefit. However, I personally also enjoyed the many interesting insights and explanations on ski boot development during our long morning.

Despite the effort and cost, I can only recommend a boot fitting. With good partners like Beni, Atomic offers the possibility of a really suitable ski boot for long and sustainable (definitely for the feet!) skiing. Tiptop!

To summarise, the following modifications were made to my ski boot or replacement parts were added or original parts were replaced:

  • Insole

  • Heel wedge

  • Fitting the Atomic Mimic liner

  • Atomic Low-Volume Race tongue

  • Front spoiler

  • Atomic rear spoiler

  • Atomic Race boot strap

  • Moulding the shell on the big toe, metatarsophalangeal joint, outer instep and in the inner ankle area

Atomic Bootfitting Partnershops

Germany

Black Sheep Sports

Austria

Intersport Fischer
Jennewein pure sports
Alber Sport
Sport Hagleitner
Bründl Sports
Sportshop Skiworld
Die Boerse
Sport H&N
Intersport Kitzsport
Sport Widmann

Switzerland

Sportshop Timeout
Pollux Sport
Virage
Sport Baumann

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