How to Choose a Helmet and Pads That Fit Your Child

A helmet that does not sit correctly does not protect, and can make things worse. It slides back on impact and leaves the forehead exposed, or it rotates on the head and blocks vision at exactly the wrong moment.

The trouble is that most parents buy by eye rather than by measurement, then assume the job is done. This guide starts with a tape measure.

1. Measure your child's head first

1. Take a soft tape measure, or a piece of string you can lay against a ruler afterwards.
2. Run it around the head about two fingers above the eyebrows.
3. Take it around the widest point at the back of the skull, not below it.
4. Pull it snug without pressure and read the number in centimetres.

Re-measure once a year. A child's head circumference grows slowly, but it grows, and last year's helmet may have become tight.

2. The sizes we carry at Baby Story

• Small — 52 to 54 cm, usually suiting ages three to six.
• Medium — 55 to 58 cm, usually suiting ages five to ten.

Notice the two ranges overlap in age but not in circumference. The measurement decides, not your child's birthday.

If the reading falls on the boundary, take the smaller size and use the adjustment dial. A helmet slightly too large is a hazard; slightly too small is merely uncomfortable.

3. Four tests that settle the fit

1. The two-finger test. Place two fingers above your child's eyebrow — the helmet rim should start there. A helmet tipped back leaves the forehead bare, and it is the commonest error by far.
2. The shake test. Hold the helmet and move it side to side. The skin of the forehead should move with it. If it slides freely, the size is too big.
3. The V test. The two side straps should meet in a V directly beneath the earlobe, neither in front of it nor behind.
4. The one-finger test. With the chin strap buckled, exactly one finger should fit between strap and chin. When your child opens their mouth, the strap should pull slightly.

4. Weight: the number parents ignore

The children's helmets we stock run between 350 and 510 grams, and the gap between those two ends is noticeable on a five-year-old's neck.

The rule: the younger the child, the lighter the helmet. Neck muscles have not matured yet, and a heavy helmet tires them so they take it off after ten minutes — which defeats the whole point.

Watch the vents as well. In Jeddah heat, a helmet with few vents turns a ride into an ordeal, and a child who sweats under it refuses it next time.

5. When a bike helmet reaches its end

• After any hard impact, even if it looks fine. The inner layer absorbs a shock by crushing, once only, and the foam can compress internally with no visible mark on the shell.
• When it fails the shake test. Internal pads wear down with sweat and use, so the helmet loosens gradually.
• Every three to five years even without a crash, because foam and straps age.
• If the shell cracks or the inner layer starts crumbling.

6. What does not count as a helmet

Three substitutes we see and none of them work: an adult motorcycle helmet, whose weight strains a child's neck; a construction hard hat, which has no shock-absorbing layer at all; and an older sibling's helmet, with worn pads and the wrong size.

One helmet does cover every activity in practice — bike, scooter and roller skates. The children's helmets we carry are built for all three.

7. Pads: which ones actually earn their place

• Knee pads first. Knees hit the ground first in most falls, and a knee wound is what stops a child trying again tomorrow.
• Wrist guards second. Children put an arm out instinctively, and a guard spreads the load into the forearm rather than the wrist.
• Elbow pads last. Genuinely useful in the first fortnight after the stabilisers come off, less so afterwards.

At Baby Story, pads usually arrive as part of a set with inline skates: one set includes a helmet plus six protective pieces, which works out cheaper than buying the parts separately.

8. When your child refuses: four tactics from Baby Story branches

Let them choose. A child who picked the colour and the graphics refuses it far less often. This is the single most effective tactic.

Wear one yourself. A parent riding bare-headed dismantles the rule without saying a word.

Make it the condition for setting off, not a punishment. No helmet, no ride — no debate and no threatening tone.

Start with it from day one. Introducing a helmet after a year of riding without one is a battle; having it there from the start is simply a habit.

One last thing: never leave a helmet in a parked car. Heat softens the inner layer and shortens its life.

Protection, summarised

Measure the head, choose between 52 to 54 and 55 to 58 by measurement rather than age, then run the two-finger, shake, V and one-finger tests. Pick the lighter helmet for a younger child, and replace it after any hard impact.

To browse bikes and safety gear together, see kids bikes and bicycles or kids scooters. At the tricycle stage a helmet is less urgent but builds the habit early, while on an a kids electric motorbike the speed makes it non-negotiable. Buying bike and helmet together? Sizes sit in bikes with training wheels.