How Fit Ratings Work
Updated 2026-10-18
Brand size charts are where we start. Fit ratings add what riders tell us after they've measured themselves and worn the gear. This page explains the whole method. The rules are public. Each rider's numbers stay private.
What counts as a qualifying report
A Fit Report counts toward a rating only if it has all of these:
- A taped measurement. The rider measured with a tape: head for helmets, waist for pants, chest for jackets and suits, foot for boots, hand for gloves.
- The size they wore.
- How it felt after at least 15 minutes of wear. Many fit problems take that long to show up.
- A fit verdict: runs small, true to size or runs large compared with the chart.
A few more rules:
- We review every report before it counts.
- Each rider counts once per model. If you send more than one report for the same model, we use your latest.
- Our own internal test reports never count.
- Photo-estimated head sizes never count for helmets. A photo can't measure all the way around a head the way a tape does.
How reports are grouped
We group reports by model, for example one helmet model, using the same product line as the brand's size chart when we have one. Within each model we count how many riders said it runs small, true to size or runs large. The most common verdict is the one we rate.
Levels
| Qualifying reports for a model | What has to be true | What you see |
|---|---|---|
| 1 to 4 | Any | Nothing public. Too few reports to say anything useful. |
| 5 to 9 | At least 70% agree | A soft note with the count, for example "Some riders size up: 6 of 8 riders sized up." Your recommended size doesn't change. |
| 10 or more | At least 75% agree, and at least half of those riders measured in the middle of their chart size | A high-confidence tip with the count, for example "12 of 15 riders sized up." This can move our size suggestion one size up or down, and we always show the size the brand's chart gives too. |
A model with 10 or more reports that doesn't meet the high-confidence rules can still get the soft note if at least 70% agree.
Why the middle of the size matters. Say a chart's Large covers 59 to 60 cm. A rider at the very top of that range who moves to XL tells us little about the helmet, because they were almost an XL already. When riders in the middle of the range still size up, that tells us the model itself runs small. We count the middle as the center half of the size's range on the brand's chart. A model needs the brand's chart before it can get a high-confidence tip.
What we always show, and what we never show
- We always show counts, for example "12 of 15 riders sized up", so you can judge for yourself.
- We never publicly show any rider's measurements, name, account, notes or anything else that could identify them. Ratings are counts only.
- A rating is what riders reported, not a brand claim. Head shape, layers and preference still matter, so check the product's own chart and buy where returns are easy.
Current public ratings
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Related
- Motorcycle helmet sizing by head shape
- Fit Confidence: how we size from brand charts
- File a Fit Report
- For developers and AI agents: public ratings are at /api/fit-ratings (counts only)