How to Choose a Ski Helmet | Fit First, Then Safety

Choosing a ski helmet comes down to fit, certification, and goggle compatibility—in that order.

The best way to choose a ski helmet is to measure your head circumference, compare it with the brand’s sizing chart, and pick the helmet that fits snugly without pressure points, shifting, or gaps. A helmet that slips or rocks won’t protect you properly, no matter how many features it packs. Here’s the exact process that works.

Getting the Right Size: Measure Your Head

Everything starts with one number: your head circumference. Use a soft tape measure around the largest part of your head—about 1 inch above your eyebrows and just above your ears. Keep the tape level and snug, not tight.

Manufacturer sizing varies, so always check the brand’s specific chart. Evo’s general chart lists Small at 52–55.5 cm, Medium at 55.5–59 cm, Large at 59–62.5 cm, and Extra Large at 62.5 cm and up. Salomon’s adult sizing runs slightly different: XS 48–53 cm, S 53–56 cm, M 56–59 cm, L 59–62 cm, XL 62–64 cm.

Salomon recommends measuring about 1 cm above the brow bone. When you try a helmet, the tightening dial should not be maxed out—if it is, the shell is too big. Whatever size you land on, the fit should feel secure without pressure points.

How a Ski Helmet Should Fit

Put the helmet on and fasten nothing yet. It should sit level on your head, with the front edge no more than 1 inch above your eyebrows. Shake your head side to side. The helmet should not rock, shift, or move independently—it should feel like part of your head.

• The shell and liner: A proper ski helmet has a hard plastic shell over a shock-absorbent foam liner.
• The chin strap: Buckle it snugly. You should fit one to two fingers between the strap and your chin, but no more than two.
• The fit dial: Many helmets have a rear adjustment dial. Use it to fine-tune the fit, but it does not replace correct sizing.
• Ventilation: Adjustable vents let you dump heat on warm days and close up when it’s cold.
• Removable liners: Washable ear pads and liners make a helmet last longer and stay fresher.

Head shape matters as much as circumference. Some helmets run round, others oval. If you can, try several models in person before committing—what fits your friend perfectly may pinch your temples.

Checking for Goggle Compatibility and Safety Certification

Put your ski goggles on with the helmet before you buy. A gap between the helmet brim and goggle top—the so-called “gaper gap”—means cold air and snow hit your forehead all day. The helmet should sit low enough that the brim nearly touches the goggle frame.

Certification is the other non-negotiable. In the U.S., look for an ASTM F2040-18 label on recreational snow-sports helmets. European helmets carry EN 1077:2007 certification, and Health Canada lists EN 1077, ASTM F2040, Snell RS-98, and CSA Z263.1 as accepted standards. A bike or multi-sport helmet is not a substitute unless it’s certified for snow use.

MIPS and similar rotational-impact systems appear on many current models as an added safety layer, which is a reasonable feature to consider—but certification and fit come first.

Once fit and certification check out, you’re down to comfort details: weight, profile, and how the liners feel against your head. Lighter, lower-profile helmets are easier to wear all day, especially for kids. If you’re shopping on a budget, our tested roundup of the best budget ski helmets breaks down which affordable models still meet the safety baseline.

Common Ski Helmet Sizing Mistakes

Most fit problems trace back to a few predictable errors. Buying by hat size instead of measuring head circumference tops the list. Ignoring the brand’s sizing chart is close behind—sizes are not universal across manufacturers.

• Too loose: Gaps, rocking, or the helmet moving when you shake your head.
• Too tight: Pressure points that cause headaches within an hour.
• Skipping the goggle test: You won’t notice the gaper gap until you’re on the mountain.
• Maxing out the fit dial: If the dial has to be cranked to the limit, the shell is the wrong size.

Salomon’s guidance is worth repeating: the helmet should feel secure before you fasten the chin strap. Test motion up and down, then left and right. If it holds position on its own, the strap simply keeps it there.