The K2 Anthem 105 Zonal BOA is a women's freeride boot with a 105 flex, built for advanced to expert skiers who want comfort and a full set of tech features. It runs a 97 mm reference last that adjusts to 100 mm with heat molding, with a fully heat-moldable TPU shell and cuff and a P2 heat-moldable liner.
BOA dials at the top and bottom of the boot distribute pressure evenly, backed by two cam power straps. It adds a Fastfit instep for easier entry, a bolted spine, adjustable forward lean at 11, 13 or 15 degrees, and removable GripWalk soles.
The trade-off is that a 105 flex is still a performance boot. It is more forgiving than the AF Zonal, yet strong enough to want a skier who drives it.
It suits advanced women who want power plus all-mountain versatility. K2 notes these boots should be heat molded before use, and our bootfitters can take care of that in the shop.
For women who want a comfortable, powerful boot for the whole mountain, the Anthem 105 Zonal BOA is a terrific match.
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 with our team at (802) 253-4531. Preliminary boot work is included with every boot purchase.
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