The best kids' ski helmets, ranked on published safety and size range

Why weight is the spec that matters most on a child

On an adult helmet, 50 g either way changes nothing you will notice. On a six-year-old it changes whether the helmet stays on. A child’s head is large relative to their neck strength, and a heavy helmet becomes a complaint by early afternoon, which becomes a helmet pushed back on the head, which is a helmet no longer protecting anything.

Only one of these three publishes a weight. Smith publishes 350 g for the Glide Jr. in youth medium; Giro publishes 520 g for the Crue in the same nominal size. That 170 g gap is the largest difference between these two helmets on any published figure, and it is the one a child will actually feel.

The size ranges, side by side

Measure the head first. The method takes ninety seconds and is on the kids’ helmet size chart, which also has the cross-brand table in full.

The Retrospec stops at 55 cm, which is a real limitation rather than a detail: a nine- or ten-year-old is frequently past it, and at that point the cheapest option on this page is not an option at all.

The dial range, and the second season it buys

Giro publishes something almost nobody else does: how much adjustment the dial actually provides. 6 cm inside a single size is roughly two years of head growth on a typical child, plus a vertical adjustment that changes how the helmet sits front to back.

That is the honest counter-argument to the Smith’s weight advantage. If your child is mid-growth-spurt and you are buying one helmet to cover two seasons, a published adjustment range is worth more than 170 g.

The rotational liner, and why it is the skip criterion

MIPS is a thin low-friction layer inside the shell that lets the helmet rotate a few millimeters against the head during an angled impact. A child catching an edge does not arrive at the snow squarely; they arrive at an angle, and an angle produces twist.

The Retrospec on this page is certified to both standards, has a dial, costs $39.99, and has no rotational liner in any version. Over two seasons at five days each, the step up to a helmet that has one is about $3.50 a day. That is why it is marked as the skip despite being a perfectly legitimate helmet, and the fuller explanation is here.

If your child wears glasses

The helmet is not the problem; the goggle is. Look for an over-the-glasses goggle rather than a different helmet, and check the two together for a gap above the goggle frame. The children’s goggle picks include two over-the-glasses options at the same price as the standard ones, and the helmet-and-goggle fit guide covers how to check the combination.

Should you buy one at all?

For a child, this is a genuinely reasonable question, and we get nothing if you decide against it. Our answer is still buy, for a specific reason: rental helmets are the worst-fitting item in any rental fleet, because the retention system has been adjusted by hundreds of other heads and children’s sizes turn over fastest.

Run it yourself against your own numbers on the buy versus rent page. It lists the rental rates we use as inputs, and it reaches the opposite conclusion for skis and boots, which we also say plainly.

The one hand-me-down to refuse

• Never a used helmet. A helmet protects by crushing, and a crushed liner does not crush twice. You cannot see whether a helmet has already done its job once, which makes a hand-me-down from a cousin the single worst piece of secondhand gear you can accept.
• Retire after any impact you noticed, even if the shell looks undamaged.
• Jackets, pants and goggles pass down fine, and that halves every cost-per-day figure on this page. It is the biggest lever in family ski economics and almost nobody publishes it.