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General Boot Questions

How does the Apex patent-pending Serpentine lacing system work on the walking boot?

The Antero has a the patented Serpentine lacing system which provides a more secure and comfortable closure over your instep. The Serpentine lacing acts as a pully system, drawing the tongue down over your instep instead of pushing down like traditional cross lacing. Maximum heel retention is the result.

How does the cuff alignment setting work?

The cuff alignment setting adjusts the upper cuff of the Apex ski boot, aligning the upper cuff with your leg’s angle of entry into the chassis. If you have a slight bowleg or knock-knee you will want to adjust the cuff to align with your lower leg shape. A tool to make this adjustment (an Apex hex wrench) is included with each pair of boots. You can also use a hex wrench of your choosing to complete this adjustment. Please also view the video here: for further instructions on how to make this adjustment.


How does the Tunable A-Flex Suspension system work for adjusting the flex of the boot?

The Tunable A-Flex Suspension system allows for three different boot flex settings. You can adjust the flex to your liking by installing one of three different flex elastomers provided with each pair of boots. A tool to make this adjustment (an Apex hex wrench) is included with each pair of boots. You can also use a hex wrench of your choosing to complete this adjustment. The flex elastomers are color coded for ease: green is softest, blue is medium, and black is stiffest. The blue or medium flex elastomer is installed as the default. But, you can easily adjust 10 points stiffer or 10 points softer by inserted a different flex elastomer. Please view the instructional video here: for further information.

2021/22 Boots:
Boot Model Tri-Level flex rating
Antero 115/125/135
Blanca 75/85/95

How does the Adjustable Flex-Arm work for setting the forward lean angle?

Lower Adjustable Flex-Arm

The Adjustable Flex-Arm allows you to adjust the forward lean of your Apex Ski Boot into 4 different forward lean positions: 10°, 12°, 14°, or 16°. A tool to make this adjustment (an Apex hex wrench) is included with each pair of boots. You can also use a hex wrench of your choosing to complete this adjustment. Please view the instructional video here: for further information.

Can the Apex Boot liners be heat molded?

Yes, the inner liner of the Apex ski boots can be heat molded to fit your unique foot shape. Many foot types—especially those with boney prominences—can be accommodated by heat molding. Heat molding can solve many issues resulting from boney prominences. Heat molding can also open up volume in the boot to allow for some extra length or width if needed.

Can I buy the heat-moldable EVA foam liner separately?

Yes. Please call or email or HQ (303-530-3340 or for information on a purchase of fresh liners.

Can I buy the Apex inner-walking boot or the Apex outer chassis separately, or do I have to buy them?

Apex ski boots are sold as a system, and cannot be purchased as individual pieces. The inner walking boot is specifically designed to be compatible with the outer chassis, in each specific size, and they are designed to work together. They are not sold separately and are not intended to work with boots designed and built by other brands.

Can I use the Apex walkable boot as a snowboard boot?

Yes, you can certainly use the Apex inner-walking boot as a snowboard boot. They will be on the stiffer end of the snowboard boot spectrum, which makes them very high-performing and are enjoyed by many skiers who snowboard as well.

Boot Fit & Sizing

What is Boot Sole Length (BSL) for Apex ski boots sizes?

Blanca [Women's]
Size BSL
23 281mm
24 291mm
25 301mm
26 311mm
27 321mm
28 331mm
Antero VS [Men's]
Size BSL
26 301mm
27 311mm
28 321mm
29 331mm
30 341mm
31 351mm

Does Apex size differently than other brands and how do I size Apex to my feet?

Apex ski boots size a little differently than other ski boots. Please visit our sizing chart here: to determine which Apex boot will work best for you. If you are between sizes, we recommend going a size up in general. Remember that you can heat mold the inner liner to achieve extra interior length and volume. See our FAQ on heat molding above.

Please keep in mind that the charts are for general reference, as everyone’s feet are very different. Fitting a boot can be a very complicated process based on foot length, width, arch height, instep height, foot volume, supination/pronation, calf volume, boney prominences, and more. Our charts provide a general working guideline. Give us a call for an over-the-phone [removed] of your best sizing option at 303-530-3340.

Does Apex make half sizes?

Apex only makes whole sizes. However, we achieve half sizes by heat molding the inner EVA foam liner to open up length within the boot. For example, an Apex skier wanting to wear a 27.5 half size would purchase a 27 whole size and have his/her boots heat molded at their local dealer or ski shop to open up length within the boot.

Binding Compatability

Are the Apex ski boots compatible with all alpine bindings?

Yes, the Apex boot chassis is designed to fit all alpine ski bindings: any brand. No special bindings are required.

What adjustments might I have to make to my ski binding should I purchase a pair of Apex ski boots?

Our models are very close in boot sole length (BSL) to traditional ski boots, within a few millimeters per size. Minor adjustments will be needed, as is the case when buying any new ski boots. But, remounting bindings is an unlikely modification. Please visit your local ski shop to have your bindings checked and adjusted by a certified professional after purchasing.

Apex Ski Boot Locations and Demo Centers

Are Apex Ski Boots available internationally?

Yes, the Apex Ski Boots are available internationally. Please follow this link to find an international location near you: dealers and be sure to click on “Show All International Dealers” at the top of the page.

Can I demo a pair of Apex ski boots before I buy them?

Yes, you can demo our boots before you buy them, and we have several Demo Centers located across the USA. The Apex HQ Demo Center is located in Golden, Colorado conveniently located off of I-70, exit 264, on your way up to the mountains. Look for our Apex Demo Center sign! If you can’t make it to us, please follow this link and refer to the DEMO CENTERS area on the right of the page to find a location near you.

What are the Demo Center hours?

Apex Demo Center has hours Monday-Saturday October through March every ski season. We are only closed on Sunday.

Apex's Demo Center has off-season hours April through September. Please call 303-530-3340 or email for an appointment prior to visiting. Appointments required for off-season visits. Thank you.


My BOA Reel broke, can I get a replacement?

Yes. The Boa system and laces are guaranteed for the lifetime of the boots by the manufacturer, The Boa System.

Depending on how quickly you need the replacement part, there are several options.

Apex will repair nearly all BOA failure at our shop in Golden, CO. Please email or call us for assistance at 303-530-3340 or

If the need is not immediate, please visit the Boa website at: for information on how to receive a replacement through their Warranty Department.

You may also be able to repair your BOA system, depending on the severity of the problem. Boa has several repair videos and instructions on the website:

If you are in need of immediate repair of your Boa reel system, we suggest that you contact a local ski/board shop that is familiar with the Boa system. Typically, a shop that carries snowboards and snowboard boots are very familiar with Boa, and it is typically is a very fast, easy, and inexpensive fix or replacement part. If the local shop does not happen to have a replacement, or they are not able to fix it, we would be able to send a replacement Boa reel to the shop for overnight delivery so we can get you back out on the slopes as soon as possible.