Find your starting size, understand boot fit, and choose with confidence. This guide covers alpine ski boots for adults and juniors. Always check the individual product’s fit volume, flex and sole standard before ordering.
1. Measure both feet
You’ll need paper, a pencil, a ruler and a hard, level floor.
- Place the paper against a wall and stand on it barefoot, with your heel lightly touching the wall.
- Keep your weight on your foot and mark the end of your longest toe.
- Measure from the wall to the mark in centimetres. Repeat on your other foot.
- Record both measurements and use the longer foot as your starting reference.
Also measure the widest part of your forefoot. Length helps identify size; width and foot shape help identify the right boot.
2. Understand Mondo sizing
Ski boots use Mondopoint, usually shown in centimetres. A foot measuring 26.5 cm corresponds to a Mondo reference of 26.5. This is a starting point for fitting, rather than a guarantee that every boot in that size will fit.
Measure your feet instead of relying on your everyday shoe size. US, UK and European conversions vary between manufacturers.
| Foot length (cm) | Foot length (mm) | Mondo reference |
|---|---|---|
| 18.0 | 180 | 18.0 |
| 19.0 | 190 | 19.0 |
| 20.0 | 200 | 20.0 |
| 21.0 | 210 | 21.0 |
| 22.0 | 220 | 22.0 |
| 22.5 | 225 | 22.5 |
| 23.0 | 230 | 23.0 |
| 23.5 | 235 | 23.5 |
| 24.0 | 240 | 24.0 |
| 24.5 | 245 | 24.5 |
| 25.0 | 250 | 25.0 |
| 25.5 | 255 | 25.5 |
| 26.0 | 260 | 26.0 |
| 26.5 | 265 | 26.5 |
| 27.0 | 270 | 27.0 |
| 27.5 | 275 | 27.5 |
| 28.0 | 280 | 28.0 |
| 28.5 | 285 | 28.5 |
| 29.0 | 290 | 29.0 |
| 29.5 | 295 | 29.5 |
| 30.0 | 300 | 30.0 |
| 30.5 | 305 | 30.5 |
| 31.0 | 310 | 31.0 |
| 31.5 | 315 | 31.5 |
| 32.0 | 320 | 32.0 |
Between sizes? Ask for fit advice before rounding up. Many boots share a shell across two neighbouring sizes, such as 26/26.5. Shell groupings and liner or size-adjuster arrangements depend on the model. Not every listed size is available in every boot.
3. Match the boot to your foot shape
- Low volume: A closer fit typically suited to narrower or lower-volume feet.
- Medium volume: A balanced fit typically suited to average-volume feet.
- High volume: More space, typically suited to wider or higher-volume feet.
Last width describes the boot’s forefoot width at a specified reference size. Compare the manufacturer’s stated size as well as the number. Instep height, heel shape and calf fit matter too. Adding length to solve a width problem can leave the heel loose.
4. Check the fit before skiing
Try boots indoors with one pair of thin ski socks. Fasten the buckles or BOA system with moderate tension, then flex forward several times.
- Your toes may lightly touch the front while standing upright and should ease back when you flex forward.
- Your heel should feel secure, with little lifting or sliding.
- Expect close, even contact. Sharp pain, numbness or persistent toe pressure needs attention.
Liners settle with use, but don’t assume a painful fit will resolve itself. A boot fitter can assess the shell and advise on suitable adjustments.
5. Choose a suitable flex
A lower flex number generally means a softer boot; a higher number generally means a stiffer boot. The right choice depends on your ability, weight, strength, ankle mobility and skiing style. Flex numbers are not standardized across brands, so use them as a comparison point rather than a universal scale.
6. Check sole compatibility
Read the boot’s sole standard and your binding’s compatibility information before pairing them. Alpine, GripWalk and touring soles are not automatically interchangeable. Have your setup checked and adjusted by a qualified ski technician.
Junior boots
Measure children’s feet again before each season. Choose a junior model with suitable flex and confirm that its sole standard is accepted by the binding. Ask for fitting advice about growth allowance rather than buying substantially oversized boots.
Need help choosing?
Contact The Drop with your foot measurements, usual boot size, skiing experience and the models you’re considering. Measurements help narrow the options; trying boots with a qualified boot fitter is the best way to confirm the fit.
Further reading: Atomic boot-fitting guidance, Atomic sizing advice and K2 ski-boot selection guide.
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Description
For all-mountain skiers looking for a medium-flex wide-fit ski boot, the Atomic Hawx Magna 110 S BOA is a great choice. This 110-flex boot has a high-volume 102mm last. Engineered with Prolite construction, the lightweight shell and cuff wrap around your foot with key zones reinforced to transfer power to your skis. Instead of lower buckles, the BOA® Fit System offers improved shell wrapping with bi-directional micro adjustments for a responsive fit. The cushioned Mimic Silver Liner can be molded to follow the exact shape of your foot using the Mimic heat fitting process. An asymmetrical 3D Stretch Toe Box allows for extra length in the toes. Memory Fit offers full, heat-moldable customization of the shell and cuff in minutes. To accommodate different calf sizes, the Adaptive Fit System (AFS) Cuff spoiler can easily be removed. Adjust forward lean to three settings using next-gen Power Shift 2.0.
2 Years
The warranty excludes normal wear, damage caused by misuse, inadequate maintenance, improper storage or transport, failure to follow product instructions, modifications, and damage from falls or abnormal impacts.
