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|Mondo Size||Men (US)||Women (US)|
Ski boots are measured using Mondo Sizes. Nearly all ski boots are unisex meaning that the arch isn't adjusted for a woman's foot. There are women's specific boots which visually appeal to the female skier more, may use softer materials, and may have a women's specific liner. The liner accommodates a women's narrower ankle and smaller calf. The Mondo size is a measurement in centimeters of the inside of the boot shell. Within the shell will be a thick liner. When you try on ski boots at home, do so with ski socks on. Stand up, walk around and make sure there aren't any major pressure points or loose points.
mm Measurement Printed On The Boot: Typically there will be a size stamped onto the plastic of the boot that says something like 315mm. This measurement can be a bit misleading and isn't useful in determining what size you are. This mm measurement refers to the actual outside length of the boot, commonly called the outsole length. The trouble is that this doesn't precisely correlate to the inside length of the boot which would be usefule for sizing. If you are looking at your boot to try to figure out what size it is, then keep looking for a number, usually a mondo size number like one in the chart above.
Modern ski boots have 4 ratchets. Most of these allow for micro adjustments. No tools are needed to adjust these. Twist the ratchets to tighten or loosen them. In order to have a great fit, make the boots as tight as possible and slowly loosen the ratchets until you feel comfortable.
Most boots will give you a Flex Rating which typically goes from about 30-140. The stiffer the boot, the more advanced the skier. Sometimes the Flex Rating is not explicitly stated but it is included in the title of the boot e.g. Nordica Jah Love 130 has a Flex Rating of 130. This is a boot for an advanced skier.
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