How to Size and Fit a Ski Helmet for a Big Head (XXL Sizing Chart Guide)? | Measure Before You Buy

A big head in ski helmets usually measures roughly 60–67 cm around, but “XXL” is not a standard size — always match your measurement to the specific model’s chart.

There is no industry-wide XXL ski helmet size. What one brand stamps XXL, another calls XL or XL/XXL, and a third sells as “Round Contour Fit L.” A 63 cm head can be an XL in one chart, an XXL in the next, and outside the range entirely in a third. That means the circumference on the box tells you almost nothing on its own — the number on the tape and the chart for the exact model you’re buying tell you everything. Measure once, write it down, then compare it against that one chart before you order.

How Do You Measure Head Circumference Correctly?

Wrap a soft measuring tape level around your bare head, about three fingers above the eyebrows and just above the ears, then read the result in centimeters. HEAD places the tape roughly three fingers above the brow and ear line, while Salomon puts it about 1 cm above the brow bone and just above the ears. Both mean the same thing: level, not tilted.

Three rules matter more than the tape itself:

• Measure the bare head. Not over a hat, not with your hair piled up. Hair volume and headwear add centimeters that don’t exist.
• Keep the tape level front to back. A tape that dips at the back reads smaller than reality.
• Record the number in centimeters. Every manufacturer chart uses cm, and converting later just invites rounding errors.

Don’t guess from hat size. A large baseball cap is not a helmet size — the fit systems and shell shapes work differently, and the overlap is unreliable.

What Does the Sizing Chart Actually Say for Large Heads?

Published ranges for large heads vary by brand, model, and fit category, so the chart you read must be the one for the exact helmet you’re considering. HEAD, for example, lists XL/XXL as 60–63 cm and notes that its ranges are a reference only. Salomon’s adult guide lists XL as 62–64 cm and publishes no general XXL range. Other published snow helmet charts run wider — 62.5–65 cm, 63–67 cm for standard XL, and 63–67 cm again for “Round Contour Fit L.” Open-face and full-face helmets add another layer: one chart lists open-face XL at 63–65 cm but full-face XL at 59–63 cm.

Read that again, because it’s the trap. A helmet labeled XXL with a chart topping out at 63 cm will not fit a 66 cm head, no matter what the tag claims. Check the chart’s upper limit against your measurement, not the label on the page.

How Do You Fit a Big-Head Helmet Once It Arrives?

Fit is decided in five minutes with the helmet on your head, not on the order page. Work through it in order:

1. Loosen the rear fit system fully and set the helmet on level — low enough to cover the forehead, clear of your vision.
2. Tighten the rear dial until it’s secure but comfortable. Salomon notes the system shouldn’t end up fully tightened or fully loosened when the fit is right, so a mid-range dial position is a good sign.
3. Fasten and adjust the chinstrap. HEAD says the helmet should sit snug directly above the eyebrows, with straps solidly holding it in place.
4. Shake your head up, down, and side to side. The helmet should stay put without the chinstrap carrying all the retention load, and you shouldn’t feel pressure points.
5. Put on your goggles. HEAD recommends no gap between the helmet’s lower edge and the goggles’ upper frame.

If it slides or the strap is doing all the work, the size or shape is wrong — tightening harder won’t fix it.

Plenty of skiers discover after measuring that only a few shells on the market actually cover their range. Our tested roundup of XXL ski helmets that fit big heads lists the models with published charts wide enough to matter.

Why Does a Big Head Still Get Pressure Points?

Circumference decides which shell you can wear; head shape decides whether you’ll enjoy it, and the two don’t always agree. A head can measure 64 cm and still rattle around in a wide shell if the skull is round rather than oval. The “Round Contour Fit” ranges show this clearly — 63–67 cm in a round-contour option is not the same fit as 63–67 cm in a standard shell. Ordering a bigger helmet to escape pressure often makes it worse: a loose shell tips forward, and the padding loads harder on the forehead and temples.

The honest fix is narrowing the chart first (shape, then size), then fitting with everything you actually ski in. Goggles, glasses, a face mask, and audio earpads all take up space inside the shell. Test with them on. And read the sizing guidance at HEAD’s helmet measurement guide alongside the chart for your specific model — the manufacturer’s own numbers beat any general table, including this one.