The K2 BFC 110 BOA is a high-volume men's boot with a 110 flex, built on K2's BFC last for wider feet. The CushFit Plus liner blends open-cell and EVA foam, and both the shell and cuff are heat moldable.
A BOA Fit System on the lower shell wraps the forefoot and instep evenly and fine-tunes easily. Apres Mode 2.0 unlocks the upper cuff with a lever on the back for 50 degrees of range of motion, and hands-free entry plus GripWalk soles make it easy to get in, out and around the base area.
The trade-off is precision. The BFC fit and softer flex prioritize comfort and accessibility over the locked-down feel of a race-style boot, so it is not the pick for aggressive skiers with narrow feet.
It suits progressing intermediate and lighter advanced skiers with wider feet, higher insteps or larger calves. Sizes run 24.5 to 30.5 mondo.
For skiers who have struggled to find a comfortable boot, the BFC 110 BOA is a great way to spend the day skiing instead of thinking about your feet.
Ski boots are sized in Mondopoint, based on the length of your foot in centimeters. The chart below is a general reference for converting between sizing systems.
This chart is not a fitting. The only way to know your ski boot size is to be fit in person, either with a Boot Fitting at our shop or from a professional fitting you have had elsewhere. Sizing, shape, and volume vary by brand and model, and a performance fit is snugger than your street shoe. Unworn boots can be returned under our return policy, but a boot that doesn't fit can be a big hassle for your trip if you haven't tried it on.
| Mondo (cm) | US Men's | US Women's | EU |
|---|---|---|---|
| 22/22.5 | 4/4.5 | 5/5.5 | 35 |
| 23/23.5 | 5/5.5 | 6/6.5 | 36/37 |
| 24/24.5 | 6/6.5 | 7/7.5 | 38 |
| 25/25.5 | 7/7.5 | 8/8.5 | 39/40 |
| 26/26.5 | 8/8.5 | 9/9.5 | 41 |
| 27/27.5 | 9/9.5 | 10/10.5 | 42/43 |
| 28/28.5 | 10/10.5 | 11/11.5 | 44 |
| 29/29.5 | 11/11.5 | – | 45/46 |
| 30/30.5 | 12/12.5 | – | 47 |
| 31/31.5 | 13/13.5 | – | 48/49 |
| 32/32.5 | 14/14.5 | – | 50 |
Conversions are approximate and can differ by half a size between brands.
Ski boots are built with one shell for each full and half size, so a 27 and a 27.5 are the same boot with a different liner or footboard. That is why sizes are listed together, like 27/27.5.
Very few models differ from this. Scarpa is the main exception, pairing sizes the other way (for example, 26.5/27 share a shell). When a model is sized differently, we call it out on that product's page.
Book a boot fitting on our Boot Rescue page. Preliminary boot work is included with every boot purchase.
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