How to choose your ski boots: The complete guide

Would you like to finally buy your own ski boots instead of renting them every season? Or perhaps it's time to upgrade your gear to make the most of the season?

Choosing the right ski boots is essential for enjoying skiing without worrying about your feet! Here are a few tips to help you choose the right ski boots for your feet, your level and your skiing style (off-piste skiing, downhill skiing, ski touring, freeriding, freestyle, racing, etc.).

1. Selecting the width: The metatarsal

This is the first criterion to consider when buying ski boots. The idea is to know the width of your feet, particularly the width of your metatarsal.

Narrow feet : 95 to 99 mm.
Standard feet, for most skiers : 100 to 101 mm.
Wide feet : 102 to 104 mm.
Very wide feet : +105 mm

Manufacturers provide metatarsal width information based on a reference size of 26/26.5. This width decreases for smaller sizes and increases for larger sizes. You need to add or subtract 2 mm per shell size to get the right fit.

Once this criterion has been taken into account, you need to consider the skier's support requirements. The more experienced you are, the narrower the boot you should choose. You can therefore choose a narrow boot if you are looking for precision rather than comfort. In a boot that is too wide, your foot will not be properly supported, making it difficult to control your skis.

Examples :

Example 1 : you wear a size 41 (26/26.5) with a foot width of 102 mm: you will probably need a wide boot.

Example 2 : you wear a size 44 (28/28.5) with a foot width of 102 mm: you will probably need a narrow boot. You need to subtract two shell sizes to get to 26.5, i.e. 102-4 = 98 mm reference width = narrow feet.

Please note: You can enlarge the shell of your shoes, but you cannot make them smaller. It is therefore essential not to choose a size that is too large. At Montaz, we can adapt the shell to your feet, including for specific conditions such as hallux valgus.

2. Select the height of the kick

This criterion is often overlooked, yet the height of the instep plays a fundamental role. A shoe that is poorly suited to this area can cause blood circulation problems and discomfort. Thanks to our in-store 3D scanner, we can accurately identify the right volume for your feet.

3. Measure Your Foot Length

Measuring your foot is an essential step before choosing your Mondopoint size.
What you’ll need: a sheet of paper, a pencil, and a ruler or tape measure.
Steps:
Place the paper on the floor, with one edge against a wall.
Stand with your heel against the wall and your foot flat on the paper.
Stand upright in a natural position.
Mark the paper at the tip of your longest toe.
Measure the distance from the wall to the mark.
Repeat with your other foot.
Always use the larger measurement. The length in centimetres gives you your Mondopoint size reference.

4. Understanding Ski Boot Flex

The rigidity of the ski boot, also known as “the flex” in technical terms, generally ranges from 50 to 150. It depends on your skiing level and body weight. The higher the flex, the more responsive the boot will be and the faster the power transfer. A high rigidity provides better responsiveness, resulting in greater precision during turns and maneuvers.

It is essential to choose ski boots suited to your level in order to maximize your enjoyment on the mountain!

Low flex (50–80): Ideal for beginners or those seeking comfort.
Medium flex (90–110): Perfect for intermediate skiers who want good support while continuing to improve.
High flex (>110): Designed for expert skiers, offering maximum responsiveness and precision.

The main goal is to keep your foot properly supported inside the ski boot!

5. Choosing the Right Ski Boot Footbed

The footbed helps support your foot inside the ski boot. A suitable footbed can improve arch support and limit foot movement, but it cannot compensate for a poorly fitting boot.

Your choice will depend on your foot shape, volume and personal preferences. In store, an advisor can check whether the original footbed is suitable or whether a different option may be worth considering.

6. Assess your skiing level

Ski boot stiffness, also known as flex, generally ranges from 50 to 150. The right flex depends on factors such as your skiing ability and body weight. A higher flex rating means a stiffer boot, which can provide more responsive power transfer and greater precision when turning and manoeuvring.
Choosing ski boots suited to your ability is essential for enjoying your time on the mountain.

Soft flex (50–80): often suited to lighter skiers looking for a boot that is easy to flex. It may also work for some average-build skiers, depending on their skiing style and preferences.
Medium flex (90–110): a common guideline for average-build skiers, whatever their ability level.
Stiff flex (over 110): generally suited to heavier or more experienced skiers who can flex the boot and want firm support.

The more experienced you are, the narrower the boot you should choose — for better control !

7. Choose according to your skiing style

Ski boots vary depending on your discipline!

Alpine skiing (on-piste): Choose boots that combine support and precision, essential for making smooth turns and tackling mogul fields with confidence.

See our alpine ski boots

Freeride skiing (off-piste, freeski, backcountry): If you prefer off-piste skiing, go for models designed for versatility and comfort. Freeride ski boots generally have a fairly high but progressive flex, meaning they bend smoothly to follow your natural movements while adapting to changes in terrain.

See our freeride ski boots

Freestyle skiing : Choose a high and progressive flex so the boots can adapt to terrain variations, allowing you to fully express your creativity.

See our freestyle ski boots

Ski touring and freerando: Touring ski boots are lighter, making the ascent easier. They often include specific inserts for touring bindings.
Freerando boots are also light but offer better downhill performance!

See our touring ski boots

See our freerando ski boots

Telemark: Telemark boots are larger and very rigid, providing excellent power transfer to the skis.

See our telemark ski boots

Looking for ultra-fast and easy-entry ski boots? Discover our easy-entry ski boots

Discover our bootfitting service and customize your ski boots

Your ski boots must be perfectly adapted to your body shape! Several techniques can be used to adjust your boots to the morphology of your feet.

Our MONTAZ store in La Ravoire offers a bootfitting service all winter long to adapt your ski boots and snowboard boots perfectly to your feet!

Shell deformation: Heating the shell and using specific tools to remove pressure points.
Shell grinding: Removing material from the shell’s thickness to create extra space while maintaining precision.
Liner injection: For an ultra-customized and perfectly fitted boot.

A bootfitting session can last between 20 minutes and 1 hour.

FAQ: Frequently Asked Questions About Choosing Ski Boots

How do I find my Mondopoint size?

Measure both feet while standing, from your heel to your longest toe. Use the larger measurement in centimetres as your Mondopoint reference. You’ll still need to try the boots on to check the length and volume.

How do I choose the volume of my ski boots: Low Volume, Medium Volume or High Volume?

Boot volume refers to the amount of space around your foot. Low Volume (LV) models generally suit narrow feet, Medium Volume (MV) models suit average-volume feet, and High Volume (HV) models suit wider or higher-volume feet. These labels vary between brands and models. Trying the boots on helps ensure your foot is held securely without pressure points.

What flex should I choose for my ski boots?

Flex depends on factors such as your ability, build and skiing style. Flex ratings are guidelines and can vary between brands. A boot that is too stiff may be difficult to flex, while one that is too soft may not provide enough support.

Is it normal for my toes to touch the front of my ski boots?

Yes. Your toes may touch the front of the boot when you’re standing upright. In a skiing stance, with your knees bent, they should move back slightly and should not feel compressed. If your toes remain curled or become painful, the size or fit may not be right.

Can ski boots be heat-moulded?

Some models have heat-mouldable liners. On certain boots, the shell can also be adjusted by our team. Options vary by model, so check the manufacturer’s information or ask the Montaz store for advice.