Boot Shell Sizes & Boot Fitting Tips

DIY instructions for doing your thermo-moldable boot liners.

We have dozens of ski boot fitting articles, check them out!

There are quite a few boot sizing charts floating around the web. Here are a few to get you started. Main purpose of this is to help you decide on a shell size when you’re “between sizes,” by knowing at what size point the shell gets smaller. This is especially useful when mail ordering boots (though we recommend buying boots from a retailer with boot fitting services.) When it comes to rating boots as being “wide” or “narrow,” we defer to

Black Diamond boot sizes.

Black Diamond boot sizes.

Dynafit boot sizing

Dynafit boot sizing. Click to enlarge.

Garmont boot sizing.

Garmont boot sizing. Click to enlarge.

Sidebar, with help from Paul Parker: When comparing boot shell weights, do so by discerning what shell actually fits your foot, rather than looking at BSL (Boot Sole Length) numbers.

All boot shells have a number stamped inside the lower shell (scafo in Italian) such as “28.5.” This number is the boot’s Mondo Point Size. Shell cuffs and tongues often span two lower shell sizes so they may not reflect the exact size — it is important to look inside the scafo. That number in the scafo in virtually all cases will be the length of the inside of a complete boot. This is the number you need to compare one boot shell to another in terms of what will fit your foot. For example, if you fit a 28.5 scaffo in one brand, you’ll likely find that the same Mondo fits you in another brand.

The BSL, or BOOT SOLE LENGTH, is printed on the outside of the boot and is often mistaken for size. Most manufacturers also put a sticker on the outside of the boot that shows actual MPS size.

Scott ski touring and ski mountaineering boots 2014-1015, along with Cosmos includes various models For boot fitting, here are the Scott shell breaks. This won’t change much going forward so is probably fine for 2015-2017.

Celeste, Nova and other women’s backcountry skiing boots:
23.0-23.5, 24.0-24.5, 25.0-25.5, 26.0-26.5, 27.0-27.5

Cosmos, Orbit and other men’s boots:
25.0-25.5, 26.0-26.5, 27.0-27.5. 28.0-28.5, 29.0-29.0, 30.0-30.5, 31.0-31.5

  Your Comments

  Recent Posts

Facebook Twitter Email Instagram Youtube


  • Blogroll & Links

  • Welcome to Louis (Lou) Dawson's backcountry skiing information & opinion website. Lou's passion for the past 50 years has been alpinism, climbing, mountaineering and skiing -- along with all manner of outdoor recreation. He has authored numerous books and articles about ski touring and is well known as the first person to ski down all 54 of Colorado's 14,000-foot peaks, otherwise known as the Fourteeners! Books and free ski touring news and information here.

    All material on this website is copyrighted, the name WildSnow is trademarked, permission required for reproduction (electronic or otherwise) and display on other websites. PLEASE SEE OUR COPYRIGHT and TRADEMARK INFORMATION.

    We include "affiliate sales" links with most of our blog posts. This means we receive a percentage of a sale if you click over from our site (at no cost to you). None of our affiliate commission links are direct relationships with specific gear companies or shopping carts, instead we remain removed by using a third party who manages all our affiliate sales and relationships. We also sell display "banner" advertising, in this case our relationships are closer to the companies who advertise, but our display advertising income is carefully separated financially and editorially from our blog content, over which we always maintain 100% editorial control -- we make this clear during every advertising deal we work out. Please also notice we do the occasional "sponsored" post, these are under similar financial arrangements as our banner advertising, only the banner or other type of reference to a company are included in the blog post, simply to show they provided financial support to and provide them with advertising in return. Unlike most other "sponsored content" you find on the internet, our sponsored posts are entirely under our editorial control and created by WildSnow specific writers.See our full disclosures here.

    Backcountry skiing is dangerous. You may be killed or severely injured if you do any form of ski mountaineering, skimo randonnee and randonnée skiing. The information and news on this website is intended only as general information. Due to human error and passing time, the information, text and images contained within this website may be inaccurate, false, or out-of-date. By using, reading or viewing the information provided on this website, you agree to absolve the owners of Wild Snow as well as content contributors of any liability for injuries or losses incurred while using such information. Furthermore, you agree to use any of this website's information, maps, photos, or binding mounting instructions templates at your own risk, and waive Wild Snow owners and contributors of liability for use of said items for ski touring or any other use.

    Switch To Mobile Version