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The answers to your questions, along with many tips!

Why is Ski~Mojo made for me?

It is extremely likely, and almost all Ski~Mojo users who suffered from knee problems confirm it.

By using the recommended settings, Ski~Mojo will reduce the pressure on your knees by about a third. This will allow you to immediately, radically, and sustainably relieve the pain you are used to (eradication of pain in many cases). Additionally, by helping you apply more pressure on your skis, you will have better control over your turns and reduce the risk of future injuries.

Ski~Mojo also acts as a shock absorber and reduces the shocks and vibrations from the slope. As a result, your joints are less stressed by these repetitive shocks, reducing or even completely eliminating inflammation.

For more information, you can read this article:

What effectiveness on my knee, back, and hip problems?

Absolutely! Skiing subjects the entire body to shocks and vibrations that travel up to the pelvis and lower back. Ski~Mojo, acting as a shock absorber and by restoring the ideal skiing position, reduces these vibrations and thus the stress they place on the back and hips.

Like an electric-assist bicycle, the Ski~Mojo has also won over many skiers who do not suffer from any physical issues. They use the Ski~Mojo to enhance their performance (especially their muscular endurance) during long days of skiing. It allows the skier to maintain optimal technique and turn control even after numerous runs, thus offering an amplified pleasure of skiing.

The Ski~Mojo is also used by many mountain professionals (ski instructors, ski patrol rescuers, etc.) who spend long days on the slopes and need to stay in peak condition at all times. The Ski~Mojo is also used by some athletes during training and by a few ski schools to help correct certain technical flaws.

Finally, by delaying muscle fatigue, the Ski~Mojo reduces the risk of falls for everyone, thereby improving your safety.

Walking is a movement that is difficult to reproduce purely mechanically. The Ski~Mojo was designed for skiing (as its name suggests). This movement is relatively simple, as it essentially involves bending the knees when the feet are in contact with the ground. Walking, however, is a completely different matter. Walking with the Ski~Mojo activated will therefore be more difficult, and in this situation, the user can easily deactivate it (thus regaining full freedom of movement).

The Ski~Mojo also requires a rigid support point on a boot, which can be found on ski or snowboard boots. However, walking daily in these boots is not comfortable.

Many Ski~Mojo enthusiasts also use it for ski touring, but only for the descent! Indeed, while climbing, it won’t hinder you, but it won’t help you either.

For the ascent, you have two options:

  • Either have it installed on your legs but deactivated. You’ll quickly forget about it, and you can even make your kick turns normally;
  • Or carry it in your backpack (1.4 kg without the harness, plus 0.150 kg for the harness which you can keep on). It will take you less than two minutes to install once you reach the summit.

In both cases, the Ski~Mojo will bring you a lot of enjoyment and comfort during the descent. To convince yourself or for further explanation, you can read this article:

Ski~Mojo and Ski Touring: it’s possible!

Yes, the Ski~Mojo can be used for telemark skiing. By reducing the weight felt by your legs, the Ski~Mojo will significantly increase the endurance of your quadriceps. You will be able to make many turns before taking a break.

However, a few technical aspects must be taken into consideration:

  • You will need to adjust your Ski~Mojo as if you weighed 10 to 15 kg less than your actual weight. If you weigh 85 kg, set your Ski~Mojo as if you weighed 70 kg.
  • The maximum flexion angle of the Ski~Mojo is less than that of the knee. Therefore, practitioners who adopt a very low position during their lunges risk breaking their Ski~Mojo if they force this maximum flexion or reach it too often. Your knees should never get closer than 10 to 15 cm from the ground.

The Ski~Mojo has been tested by the scientific department of the French Ski Federation. Since this exoskeleton is considered “ergogenic” (which improves muscle efficiency), it is prohibited in competitions, just like “non-natural and artificial means that alter the performance of the competitor and/or represent a technical correction of the individual body capacities whose performance is insufficient” (Article 222.5 of the FIS regulations).

I will be testing the Ski~Mojo soon. Is there anything I should know?

The activation and deactivation of the Ski~Mojo are two terms that refer to turning on or off its support mechanism (purely mechanical, as no electrical power source is required). Here is a detailed explanation of these two modes of operation:

  • Activation of the Ski~Mojo (engage the system): Activation involves engaging the Ski~Mojo’s assistance mechanism. This is done by lowering the activation switch located on each thigh. This operation can be performed while wearing gloves and/or through your ski pants if your Ski~Mojo is installed underneath. Once activated, the Ski~Mojo stores energy during flexion and releases it during extension, which relieves pressure on muscles and joints, reducing fatigue and pain while improving your performance.
  • Deactivation of the Ski~Mojo (disengage the system): Deactivation, on the other hand, consists of raising the activation switch to stop the system’s assistance. This disables the support effect, so you won’t feel anything, even though the Ski~Mojo remains attached to your legs. This mode is used when your Ski~Mojo is on your legs but you are not skiing (for walking, going to a restaurant, taking a chairlift, etc.).

After a few runs, activating and deactivating your Ski~Mojo becomes second nature.

Most of the time, no, but if it happens, it will be in a positive way.

The Ski~Mojo will help you regain an ideal posture thanks to the proprioceptive effect of the harness. It will also improve the grip of your skis on hard snow. The impact of the Ski~Mojo is perceived as positive by all skiers, including our professional users (ski instructors, ski patrol rescuers, etc.).

Only those who are used to lifting a ski to turn (a technique known as “stem”) might feel a slight discomfort during the first half-hour, as the Ski~Mojo keeps the skis pressed to the ground (precisely to provide better grip).

Finally, and most importantly, the reduction of fatigue allows you to focus on your skiing technique and therefore ski better, more safely, and for longer periods.

If you are unsure about how long it will take to get used to the Ski~Mojo, the results of our satisfaction survey should reassure you: 87% of Ski~Mojo users got used to it in less than half a day. If, after a full day of skiing, you are still not accustomed to it, this is likely due to improper adjustment. In that case, contact us, and we will help you.

How long did it take you to get used to Ski~Mojo?

Survey conducted in 2024 – 2292 responses

The Ski~Mojo supports 1/3 of your body weight. Your legs will therefore have 15 to 30 kg less to carry, which requires a short acclimatization phase that rarely lasts more than two or three runs

That’s why we encourage you to test the Ski~Mojo on long, easy slopes rather than starting with challenging terrain. The first turns might feel strange, but you will already feel more comfortable by the end of the first run. By the second or third run, you will usually have regained your bearings.

If you are unsure about how long it will take to get used to the Ski~Mojo, the results of our satisfaction survey should reassure you: 87% of Ski~Mojo users got used to it in less than half a day. If, after a full day of skiing, you are still not accustomed to it, this is likely due to improper adjustment. In that case, contact us, and we will help you.

How long did it take you to get used to Ski~Mojo?

Survey conducted in 2024 – 2292 responses

The Ski~Mojo is suitable for all adult sizes (height > 1.55m / 5’1″) and all body types. The telescopic rods adjust based on the length of the tibias and femurs. The harness and neoprene have adjustable Velcro straps, and unlike a brace or orthosis, these Velcro straps do not need to be tightened too much.

The only choice you need to make at the time of purchase is the spring strength. There are three different springs. So, choose your Ski~Mojo based solely on your weight.

  • Gold for people weighing 75 kg (165 lbs) and above
  • Silver for people weighing 55 to 87 kg (121 to 192 lbs)
  • Blue for people weighing 38 to 62 kg (84 to 137 lbs)

As you can see, there are overlap zones, and some people may have the option of choosing between two models. To make your selection, choose the model that allows you to be as far away as possible from a minimum or maximum setting. To help you in your choice, you can refer to the table below.

No, there is no maximum weight beyond which you cannot use the Ski~Mojo. However, there is a maximum level of assistance.

The Ski~Mojo’s assistance is adjustable to the nearest kilogram to support 1/3 of your body weight (for standard settings as recommended in the User Manual).

  • If you weigh 60 kg (132 lbs), the Ski~Mojo will support 20 kg (44 lbs).
  • If you weigh 90 kg (198 lbs), the Ski~Mojo will support 30 kg (66 lbs).
  • If you weigh 127 kg (280 lbs), the Ski~Mojo will support 42 kg (92 lbs).

Beyond a weight of 127 kg (280 lbs), you will have reached the maximum level of assistance. For example, if you weigh 140 kg (308 lbs), the Ski~Mojo will only support 42 kg (92 lbs), which is no longer 1/3 of your weight but still provides significant assistance.

Additionally, the Ski~Mojo comes with a neoprene sleeve that allows for a maximum thigh circumference of 60 cm. If this size is too small, you have two options:

  • The strap that wraps around the thighs is optional and also detachable. Without this strap, the Ski~Mojo may move slightly when not activated (i.e., when you’re not skiing), but this is not a problem at all. However, it presses against the thigh when activated and thus while you are skiing. There is therefore no loss of effectiveness if you remove this thigh Velcro strap. This option is even widely used by those who go spring ski touring to avoid overheating during the ascent.
  • We also offer neoprene sleeves with two thigh sizes as an option (available in our online store) in the Leopard and Camouflage colors. These come with a standard thigh circumference (max = 60 cm) and an extended thigh circumference (max = 69 cm).

Yes. If a knee brace or knee support has been prescribed by your doctor (in case of knee laxity), it is essential to keep using it. The Ski~Mojo will be placed over it and will reduce the pressure on your knees, which should greatly relieve pain and preserve the cartilage.

The knee brace and Ski~Mojo are therefore complementary tools. The brace will keep your knee aligned (which the Ski~Mojo does not do), while the Ski~Mojo will offload one-third of your body weight from your knee and absorb shocks and vibrations (which the brace does not do).

Unlike your knee brace or support, the Ski~Mojo is not a compressive system. The Velcro straps do not need to be tightened excessively, allowing the Ski~Mojo to be quickly forgotten while in use.

The answer is NO. The Ski~Mojo does not lead to muscle loss because it does not eliminate muscle work but distributes it differently. It reduces the load on the quadriceps by taking on part of the body’s weight, which decreases the effort required for each movement. However, the muscle continues to activate and contract in the same way, just with less intensity. This allows for prolonged effort and preserves endurance without overloading the muscle.

In other words, the Ski~Mojo reduces the overall load on the muscles but does not stop them from working. This prevents the rapid build-up of fatigue and exhaustion, while maintaining the same type of muscle contraction. Additionally, the user can ski longer and with more intensity, which still stimulates the muscles and keeps them constantly active, thus preventing muscle loss.

Furthermore, when muscle activation is too intense, the muscles produce more lactic acid than they can handle. This excess lactic acid causes that burning sensation, stiffness, and soreness in the days that follow. Skiing leads to overactivation of the quadriceps, and this overactivation prevents us from linking turns and extending our ski day, even though the rest of the body could handle more work.

As a general rule, a fall with the Ski~Mojo is equivalent (in terms of consequences) to a fall without the Ski~Mojo. Often, the Ski~Mojo acts as protection by distributing the impact over a larger area. Similarly, if you are hit by another skier from the side, the Ski~Mojo will take most of the impact instead of your legs.

That being said, with or without the Ski~Mojo, skiing remains a risky sport, and in certain circumstances, any equipment can hurt you: your skis, poles, backpack, etc. The Ski~Mojo is no exception. This can particularly occur when falling slowly to the side. The thickness of the neoprene sleeve significantly reduces the risk of bruising, but this cannot be completely excluded, especially if your Ski~Mojo is not properly adjusted.

Finally, just like your ski bindings need to be properly set, the correct adjustment of your Ski~Mojo is also essential. Be sure to follow the recommendations in the User Guide provided with your Ski~Mojo.

Is the Ski~Mojo easy and practical to use?

The first set up (including adjustments to your body shape) only needs to be done once and will take just a few minutes. However, it is recommended to do it indoors before heading to the slopes. The User Manual will guide you step by step through this initial process. A detailed video is also available here:

Help for the first setup

For daily use of the Ski~Mojo, putting it on only takes one or two minutes when getting dressed. If you wear it under your pants (as 50% of users do), simply put it on before putting on your pants and boots. You will then just need to connect the Ski~Mojo to your boots.

The only tool needed to adjust the Ski~Mojo is the Allen key (also known as a hex key) provided. It will no longer be needed afterwards, unless you need to modify the settings.

A drill and a 4 mm bit will be necessary if you install the permanent connectors yourself on your alpine or touring ski boots (but if you go to a store, the retailer will do this for you).

The Ski~Mojo fits almost all alpine ski boots or touring ski boots. The attachment to the boot is done using “boot connectors.” The Ski~Mojo comes with two pairs of connectors:

  • Temporary connectors: these are placed on the top of the boot shell and require no tools other than the one provided in the kit. They are mainly used when trying out the Ski~Mojo. If you are using rental boots, these are the connectors you should use.
  • Permanent connectors: these are usually installed by the retailer. If you install them yourself, we recommend doing so as soon as possible.

Snowboarders will need specific connectors, which are available for purchase on our website (under the Shop/Accessories section) or from most of our retailers.

Connectors for snowboard boots
How to install the snowboard connectors

The total weight of the Ski~Mojo is 1.6 kg.

But, like the battery of an electric-assist bicycle that allows you to go faster and farther, the Ski~Mojo gives you a feeling of lightness by supporting one-third of your own weight. These 1.6 kg therefore reduce the perceived weight on your legs by 20 to 30 kg. You will ski feeling much lighter.

Both options are possible:

50% of users wear their Ski~Mojo completely invisibly under their ski pants (any ski pants that are not tight or form-fitting are suitable). The other users wear their Ski~Mojo over their pants, visibly. However, be aware that wearing your Ski~Mojo over your ski pants can carry certain risks:

  • Although, to our knowledge, this has never happened, it is possible that the harness could get caught on the chairlift, which could have consequences when disembarking.
  • Covering your boots with your pants will still be possible, but a bit more difficult.

Additionally, if snow gets into the mechanism (in the event of a fall, for example) and compacts or freezes, your Ski~Mojo may stop functioning properly until the snow melts.

It’s very simple, including for women! Detach the harness at the front clip, disconnect the upper rods from the harness (at the two side clips of the harness), and lower the harness. Once finished, do the reverse procedure to put the Ski~Mojo back on.

If you need more explanations, watch the last part of the Installation & First Adjustments video available on this page:

Go to the HELP page to watch the video

Not at all! It’s just surprising the first time, but it poses no problem.

  • 1 – Don’t panic. It has happened to every Ski~Mojo user!
  • 2 – Sit down on the chairlift as usual. You’ll feel some resistance from the Ski~Mojo, but your body weight is more than enough to reach a sitting position. Once the chairlift is moving, your legs will rise slightly (but far from a horizontal position, as the weight of the boots and skis helps keep your legs bent without much effort).
  • 3 – Close the chairlift’s safety bar as usual to secure yourself.
  • 4 – Flip the Ski~Mojo’s buttons to the open (deactivated) position.
  • 5 – Extend your leg forward (almost horizontally) to completely deactivate your Ski~Mojo.

You can also keep the Ski~Mojo activated until you reach the top. Having the Ski~Mojo activated will help you stand up to exit the chairlift.

The Ski~Mojo should be activated when you are ready to ski with your skis on. We recommend deactivating your Ski~Mojo in all other situations, especially:

  • Before getting on a chairlift (but if you forget, it’s not a big deal)
  • Before taking off your skis or snowboard
  • To stand up after a fall
  • At the restaurant, when walking, driving, etc.

On a drag lift, you can keep your Ski~Mojo activated.

Additionally, for the Ski~Mojo to function properly, it must be installed on both legs. This is why, when you purchase a Ski~Mojo, it comes with both a right and a left leg.

It is also recommended not to ski with the Ski~Mojo activated on just one side, or worse, to use only one of the two legs provided in the Ski~Mojo kit. Unlike a brace or orthosis, the Ski~Mojo relieves weight on both legs, which creates its beneficial effects. Using the Ski~Mojo on just one side will create an imbalance and shift all your body weight onto the other leg. Just like you wouldn’t use an electric bike with only one pedal motorized, don’t use the Ski~Mojo on just one leg.

None, except for paying special attention when you take off your Ski~Mojo: make sure to dry it before storing it and fold the Velcro straps back on themselves to extend their lifespan.

However, the Ski~Mojo has some wear parts, and we recommend sending it to us for servicing after 70 to 90 days of use.

Information on the Ski~Mojo seasonal service

Problems sometimes encountered by Ski~Mojo users:

The Ski~Mojo is an exoskeleton. Just as your skeleton is connected to the ground through your feet, the exoskeleton needs to be connected to the ground (via ski or snowboard boots). If your Ski~Mojo is not connected to your ski or snowboard boots, it will slide down. So, this can’t really be considered a flaw since its exoskeleton design requires attachment to the boots.

This is why we have developed specific suspenders for those who need to wear their Ski~Mojo without having their boots on. You can find them in our online shop (under accessories) or at our retailers.

If your Ski~Mojo slips donwn while connected to your ski (or snowboard) boots, it is probably due to an adjustment issue. In this case, feel free to contact us. We will ask you for a photo that meets these 4 criteria:

  • Ski~Mojo installed on your legs and connected to your ski (or snowboard) boots.
  • Ski~Mojo activated on both sides.
  • Legs slightly bent (shins pressed against the tongue of the ski boots).
  • The photo should be taken from the side (possibly by another person).

This photo will allow us to diagnose your settings and quickly provide you with the right advice.

To understand this unpleasant sensation, which is easy to eliminate, we need to delve into some mechanics and be open to reconsidering our stance.

When the skier adopts a centered position, the Ski~Mojo works by exerting an upward vertical force (left image). This force reduces the load on the legs and knees. In response, a downward vertical force is created, allowing for better ski grip and improved control of trajectories.

However, if the skier leans back (right image), the forces exerted by the Ski~Mojo are no longer vertical. They push the hips backward and the skis forward. The skier may then feel like the Ski~Mojo is pulling them backward, when in fact it is only amplifying a pre-existing poor posture.

All components of the Ski~Mojo are detachable and replaceable by any of our retailers. The repair or replacement of the broken part is covered during the warranty period, provided you can demonstrate that your Ski~Mojo is still under warranty (keep your purchase receipt).

In case of any issues, contact us by email or phone, and we will find a solution to get you skiing again with your Ski~Mojo as soon as possible.

We also offer a remote repair service. Check out the Shop / Services section.

To avoid any breakage, we recommend reading our expert tips:

Expert Tips

Your Ski~Mojo comes with a 24-month warranty. This does not include wear parts (unless there is abnormal wear), such as the cable, neoprene sleeves, or connectors for your ski boots. Be sure to keep your purchase receipt (a photo on your phone, for example) to verify your purchase date if you need to visit a Ski~Mojo retailer at a ski resort.

If you wish, after registering your warranty on our website, you can extend your warranty up to 48 months.

However, our greatest wish is to see skiers happy with the use of the Ski~Mojo, and we are committed to helping all our customers who encounter a problem with the Ski~Mojo due to a manufacturing defect, even beyond the warranty period.

Other questions :

YES. In this case, you will use the temporary connectors provided with your Ski~Mojo.

You will need to purchase a new pair of permanent connectors (a few dozen euros) and install them on your new ski boots. Alternatively, you can try removing the permanent connectors from your old boots, but this is usually not easy. Use a hair dryer to heat the metal of the connector. The glue coating the screw will return to a liquid state, making it easier to unscrew.

Since winter 2021, the Ski~Mojo has been manufactured in France in two workshops located in the Rhône-Alpes region. It was previously manufactured in the United Kingdom.

For more information on the manufacturing of the Ski~Mojo, you can visit this page:

Our CSR approach

The Ski~Mojo is equipment designed to make skiing or snowboarding easier, much like an electric motor makes cycling easier.

Therefore, the Ski~Mojo is not considered a medical device, which is why, in most countries, it is not reimbursed by health insurance. However, this does not contradict the fact that some doctors may recommend the Ski~Mojo to their patients, just as they might recommend an electric-assisted bicycle in other situations.

There are, however, specific cases in some countries or for certain professionals. When in doubt, ask your insurance provider.