Ski Boot Sizing

So how do select a ski boot with the right size for your feet? In this episode we take a closer look at ski boot sizing and how that relates to your foot`s dimensions.

The main aspect of sizing in ski boots is whats known as Mondopoint sizing. This is a method of sizing footwear based on metric cm increments. Mondopoint sizing is directly referring to how the boot is increasing in its length. One centimetre at a time.

The main thing to think about when choosing boots with mondo point sizing, is that you need to look at ski boots that have the same cm dimension as you have in foot length

It is very common that people choose a ski boot that is too long or one size too big. A common mistake that comes from how people buy shoes. It is important that you do not make this mistake as it can cause many pains.

So if your feet are within the 10mm range of a certain cm length (say between 270-279mm), this is the boot size you should look to get into. (mondopoint 27.5)

Then after this starting point we can look at another important part of the ski boot sizing. Ski boot last widths. Last width is the internal dimension at the widest part of the ski boot, the forefoot. Last width are based on a reference size and in ski boots that is a mp 26.5.

What that means is that as the boot sizes go up and down. The width of the boot will be scaled in size. So your last dimension will be labelled the same, but be actually wider or narrower in the forefoot depending on how many sizes you are away from the reference size of a 26.5

See this chart for approximate actual last dimensions in your boot size:

Another measurement in ski boots is BSL, which is an abbreviation for boot sole length. This is the mm dimension you see printed on the heel of your ski boot. This dimension is used for setting up the jigs in order to correctly mount your bindings to the skis


There are also many differences in boot models when it comes to shapes, cuff heights, toebox widths and heel volumes. So all this should be taken into account when analyzing your boot. You do this by comparing your foot to the boot shell by going through the shell fitting process. You can check out how to do this comparison by going to this bootorial here.

Cheers :)