Skip to content
BACK · INDEX
ALGORITHM v1.1·VERIFIED 2026-04-29
CHAPTER 01 · THE METHOD

How do we
know what
fits you?

Open methodology. Cited research. No black box. Every recommendation traces to peer-reviewed female anatomy data and verified 2025-26 brand sizing.

5–7%NARROWER HEEL
10–15%LOWER VOLUME
EST · 2026 · HER.HOCKEY METHODCHAPTER 01 / 08
03 · THE NUMBERS

Three numbers explain
most of the problem.

Female feet differ from male feet in measurable, documented ways. Most hockey gear ignores them. Here's the math.

PEER-REVIEWED · 2001–2012 · ANSUR II + FRAMINGHAM
01
HEEL · NARROWER
5–7%
HER
HIS
RELATIVE COMPARISON · NOT TO SCALE

Female heels are narrower at the same foot length.

+ WHY THIS MATTERS

Mechanism behind the universal Bauer Supreme heel-slop complaint. Algorithm reroutes narrow-heel feet away from Supreme + Nexus toward Vapor (Fit 1), CCM Jetspeed, and FTW.

SOURCE · Wunderlich & Cavanagh, Med Sci Sports Exerc, 2001

02
INSTEP · LOWER VOLUME
10–15%
HER
HIS
RELATIVE COMPARISON · NOT TO SCALE

Female insteps average lower volume at the same length.

+ WHY THIS MATTERS

Why most women report Bauer Nexus and CCM Tacks XF feel like the foot floats. Algorithm penalizes high-volume picks for low-volume inferred feet.

SOURCE · Krauss et al., Ergonomics, 2008/2011

03
BUNION · INCIDENCE
HER
HIS
RELATIVE COMPARISON · NOT TO SCALE

Female bunion incidence is roughly three times higher.

+ WHY THIS MATTERS

Algorithm warns about narrow toe boxes (Vapor / Jetspeed) when bunions reported. Reroutes to Vapor Fit 2, CCM Tacks XF, or True Catalyst (heat-moldable).

SOURCE · Nguyen et al., Framingham Foot Study, 2010

04 · HOW A REC GETS MADE

From your shoe brands to your skate.

Six steps. Decision tree. No black box. Click through.

STEP 01 / 06
IFOOTPRINTS

Infer foot dimensions

Cross-reference shoe brands you wear. Each brand = known last shape (Nike Pegasus narrow / Altra wide / Hoka narrow heel). Anchor signals weight 3×, strong 2×, weak 1×. Female-anatomy prior nudges narrow/low. Self-rated width adds 4. Current skate fit overrides everything.

05 · THE RESEARCH

Ten facts the algorithm enforces.

Click any fact to expand the source citation and what it changes in our recommendation.

01Female heel ~5–7% narrower than male at same length

This is the mechanism behind the universal 'Bauer Supreme heel slop' complaint. Algorithm flags Supreme line for any user with inferred narrow heel.

SOURCE · Wunderlich & Cavanagh, 'Gender differences in adult foot shape', Med Sci Sports Exerc, 2001

02Female forefoot ~3–4% narrower at same length

Subtle but real. Combined with #1, drives recommendation toward Vapor (Fit 1) and CCM Jetspeed FTW for typical female foot profiles.

SOURCE · Wunderlich & Cavanagh 2001 + ISO 9407 footwear last specifications

03Female instep ~10–15% lower volume at same length

Why women report 'foot floats' in Bauer Nexus and CCM Tacks XF. Algorithm penalizes high-volume picks for low-volume inferred feet.

SOURCE · Krauss et al., 'Sex-related differences in foot shape', Ergonomics, 2008/2011

04Female arch typically lower than male of same length

Calibrated via inverse-arch-index analysis. Algorithm includes arch dimension scoring per skate model.

SOURCE · Wunderlich & Cavanagh 2001

05Female bunion incidence ~3x higher than male

Algorithm warns about narrow toe boxes (Vapor / Jetspeed) when bunions reported. Reroutes to Vapor Fit 2, Tacks XF, or True Catalyst (heat-moldable).

SOURCE · Nguyen et al., Framingham Foot Study, J Foot Ankle Res, 2010

06Female calf attachment ~5–10mm lower on tibia than male

Drives 'boot top cuts into calf' complaint. Bauer Vapor's tapered calf opening preferred over wider Supreme line for typical female geometry.

SOURCE · ANSUR II (US Army anthropometric data), female subset, 2012

07Female Q-angle 15–18° vs male 11–14°

Affects shin-guard patellar window positioning. Currently informational; v2 algorithm factors into shin-guard rec.

SOURCE · Horton & Hall, 'Quadriceps femoris angle: normal values and relationships with sex...', Phys Ther, 1989

08Female W:H ratio 0.80 vs male 0.88

Why unisex hockey pants (sized by waist) fit awkwardly on women. CCM FTW pants and Bauer WMNS Pro Pants accommodate wider hips + shorter torso.

SOURCE · WHO global anthropometric survey + ANSUR II

09Body weight < 130 lb (59 kg) typically can't break in 95+ flex pro boot

Brand-fitter consensus across LX Hockey, Total Hockey, Pro Hockey Life. Algorithm penalizes pro-tier picks for users under 130 lb and recommends mid-tier (60–75 flex).

SOURCE · Industry fitter consensus + brand-published flex/break-in guidance

10Foot length ≤ 22.5 cm (US W 5.5) often fits junior tier better

Senior skates scale up in volume + width as size decreases below 5.5; junior tier maintains tighter proportions. Algorithm warns + recommends junior consideration.

SOURCE · Bauer + CCM official sizing chart cross-reference

07 · HONEST LIMITS

What we're still working on.

ALGORITHM

Decision-tree, not ML

Algorithm is rule-based. Moving to a learned model once we have fit-feedback data from real users.

VISION

Photo scan deferred

Paper-trick + browser CV foot measurement is v2. v1 relies on shoe-brand cross-reference + body proxies.

STIFFNESS

Calibration is rough

Body weight + skill bracket is a proxy for break-in probability. A real model would also factor session frequency.

GOALIE

No goalie skates yet

v2. Goalie skate database + algorithm separate from player skates.

Found something wrong? [email protected] — algorithm updates are continuous.

Now you know how it works. See what it tells you.

TAKE THE FIELD GUIDE