Kids Helmet Buying Guide: How to Choose the Right Helmet for a Child

Choosing a helmet for a child should start with the child's current head size, the activity the helmet is designed for, and how securely it fits. Color, graphics and character designs may make a helmet more appealing to a child, but these features should come after size, fit, safety labeling and correct adjustment.

This kids helmet buying guide explains how to measure a child's head, understand helmet sizing, check bicycle helmet safety information, adjust straps and identify common fitting mistakes. It also covers ventilation, comfort, replacement and other features parents or caregivers may want to consider before buying.

For a broader overview of helmet selection, visit our complete helmet buying guide. You can also use our bicycle helmet buying guide for more cycling-specific information.

Choose a Helmet for the Child's Activity

The first step is to identify how the helmet will be used. A helmet should be designed and marketed for the activity the child will actually be doing.

For example, if the child will be riding a bicycle, choose a helmet intended for bicycle use. Do not assume that every helmet-shaped product is appropriate for cycling simply because it looks similar.

Some helmets may be marketed for more than one activity. In that case, check the manufacturer's intended-use information and applicable certification instead of making assumptions based on appearance.

Check the Safety Standard

When buying a children's bicycle helmet in the United States, check that the specific product carries the applicable CPSC bicycle helmet compliance information.

U.S. bicycle helmets are covered by requirements under 16 CFR Part 1203. These requirements include areas such as impact attenuation, positional stability, retention-system strength and peripheral vision.

Do not rely only on general phrases such as "safety helmet" or "protective helmet." Check the exact product labeling, manufacturer information and intended use.

For a fuller explanation of helmet certification, see our helmet safety standards guide.

Do Not Choose a Kids Helmet by Age Alone

Age ranges can sometimes help organize products, but they should not replace an actual head measurement.

Children of the same age can have different head circumferences and head shapes. One child may fit a smaller size while another child of the same age requires a larger helmet.

Before buying, measure the child's head and compare the result with the manufacturer's size chart for the exact model.

How to Measure a Child's Head for a Helmet

Use a flexible measuring tape and measure around the widest part of the child's head.

Follow these steps:

1. Place the tape slightly above the eyebrows.
2. Run it above the ears.
3. Continue around the widest part at the back of the head.
4. Keep the tape level.
5. Make it snug without pulling tightly.
6. Record the measurement in centimeters.
7. Measure again to confirm the result.

Compare this measurement with the manufacturer's size chart rather than relying on small, medium or large labels alone.

For detailed instructions, read our helmet head measurement guide.

Use the Manufacturer's Size Chart

Helmet sizes are not completely universal. A small helmet from one manufacturer may cover a different head-circumference range from a small helmet made by another.

Always check the chart for the exact model you are considering.

If the child's measurement is close to the boundary between two sizes, review the manufacturer's recommendations. When possible, try both sizes and compare how securely each one fits.

Our helmet size guide explains how to understand helmet size ranges in more detail.

Do Not Buy an Oversized Helmet to Grow Into

One of the most common mistakes when buying a children's helmet is choosing a much larger size so the child can use it for several years.

A helmet should fit the child's current head size. An oversized helmet may move from side to side, slide backward or drop toward the eyes even when the straps are adjusted.

The internal adjustment system is intended to fine-tune a suitable size. It should not be used to make a substantially oversized helmet fit a smaller head.

As the child grows, remeasure the head and replace the helmet with another size when necessary.

How Should a Kids Bicycle Helmet Fit?

A child's bicycle helmet should sit level on the head rather than being pushed far backward.

The helmet should sit low enough on the forehead to provide its intended coverage without blocking normal vision.

A commonly used fitting reference is approximately one or two finger-widths above the eyebrows.

Once positioned correctly, adjust the helmet's internal fit system and straps according to the manufacturer's instructions.

The helmet should feel snug and stable without creating painful pressure.

Check Whether the Helmet Moves

After adjusting the helmet, gently move it from side to side and front to back.

It should not rotate freely around the child's head.

If the helmet moves significantly even after the internal adjustment system and straps are set correctly, the size may be too large or the helmet shape may not suit the child's head.

For additional fit checks, read our helmet fit guide.

Adjust the Side Straps Correctly

Many bicycle helmets have straps that come down from the front and rear of the helmet and meet near the ears.

On a typical design, these straps should form a V shape around the ear. The slider usually sits close to and slightly below the ear.

The straps should lie flat rather than being twisted.

Because strap systems can differ, always check the instructions supplied with the helmet.

Adjust the Chin Strap

After positioning the side straps, fasten the chin buckle.

The chin strap should be comfortably snug rather than hanging loosely.

A common fit reference is enough space for approximately one or two fingers between the strap and the chin.

Ask the child to open their mouth widely. With many correctly adjusted bicycle helmets, this causes the helmet to pull slightly downward.

Do not allow the child to ride with the buckle unfastened simply because the helmet feels tight around the head.

Check the Rear Adjustment System

Many children's bicycle helmets include a rear dial or adjustable cradle.

This system can help create a more secure fit within the helmet's stated size range.

Turn the dial until the helmet feels stable, but do not overtighten it to compensate for an incorrect size.

If the dial must be tightened to its limit and the helmet still moves, consider a smaller size or different model.

Make Sure the Helmet Is Comfortable

A child may be less willing to wear a helmet that causes discomfort, so comfort deserves attention alongside fit and safety information.

Check for:

• Painful pressure points
• Pinching around the straps
• Rough or irritating padding
• A buckle pressing uncomfortably against the skin
• Excessive helmet movement

A helmet should feel secure without causing pain.

Consider Helmet Ventilation

Children can become warm while cycling, particularly during active riding or hot weather.

Bicycle helmets commonly use vents that allow air to move through or around the helmet.

When comparing models, consider:

• Front ventilation openings
• Top vents
• Rear exhaust openings
• Internal airflow channels
• Comfort padding

Do not choose only by counting the number of vents. The size, location and internal airflow design also matter.

For more information, read our helmet ventilation guide.

Check the Helmet Weight

A lighter bicycle helmet may feel comfortable for a child, but weight should not replace other buying considerations.

Make sure the helmet is designed for bicycle use, fits correctly and carries the applicable safety information.

A very lightweight appearance alone does not tell you whether a helmet is suitable.

Our helmet weight guide explains why total weight should be considered together with fit, materials and helmet design.

Choose Features That Are Actually Useful

Children's helmets are available with many additional features. Depending on the model, these may include:

• Removable padding
• Rear adjustment dial
• Visor
• Reflective details
• Integrated light
• Insect mesh around some vents

Check whether these features are actually included with the product.

A product image can sometimes show optional accessories, so read the written description carefully before ordering.

Do Bright Colors Make a Helmet Safer?

Bright colors and reflective details may make a helmet more noticeable in certain conditions, but they should not be described as guaranteeing that drivers or other road users will see the child.

Visibility depends on many factors, including lighting, weather, road position and surrounding traffic.

Use appropriate bicycle lights, reflectors and clothing where required or suitable rather than relying only on helmet color.

Let the Child Help Choose the Design

Once you have narrowed the options to helmets that meet your size, fit and intended-use requirements, allowing the child to choose between acceptable colors or designs can be useful.

A child who likes the helmet may be more willing to wear it consistently.

However, design preference should come after correct sizing and suitability rather than replacing them.

Check the Helmet Every Time It Is Worn

Children may loosen straps, move adjustment dials or place the helmet incorrectly.

Before a ride, quickly check that:

• The helmet sits level.
• It is not pushed far backward.
• The side straps are positioned correctly.
• The chin buckle is fastened.
• The strap is snug.
• The helmet does not move excessively.

A quick fit check can be particularly useful for younger children who may not notice an incorrect adjustment themselves.

Recheck Helmet Size as the Child Grows

A helmet that fitted properly last year may not still fit correctly after a growth period.

Measure the child's head periodically and check whether the helmet remains within the manufacturer's size range.

Signs that the helmet may have become too small include:

• It cannot sit fully on the head.
• The retention system no longer has enough adjustment.
• The helmet causes increasing pressure.
• The child's head measurement exceeds the stated range.

Replace it with an appropriate size when needed.

When Should a Kids Helmet Be Replaced?

If a bicycle helmet receives a significant impact, follow the manufacturer's replacement instructions.

Impact-related damage may not always be clearly visible from the outside.

You should also inspect the helmet for:

• Cracks
• Crushed liner material
• Damaged straps
• Broken buckles
• Broken adjustment systems
• Missing components

If the child simply outgrows the helmet, replace it with the correct new size.

See our helmet replacement guide for more information.

Be Careful With Used Kids Helmets

A used helmet can have an uncertain history.

You may not know whether it has:

• Been involved in a crash
• Received a significant impact
• Been stored in excessive heat
• Been cleaned with unsuitable chemicals
• Had parts modified or removed

Buying a new helmet with clear manufacturer, sizing and certification information makes the starting condition easier to understand.

Do Not Modify a Child's Helmet

If a helmet does not fit correctly, do not alter its shell or internal impact-management material.

Avoid:

• Cutting foam
• Drilling holes
• Removing structural material
• Adding random padding
• Replacing straps with unapproved components
• Using household glue on structural areas

Choose another size or model instead.

Clean a Kids Helmet Carefully

Children's helmets can collect sweat, dirt and dust during regular use.

Follow the manufacturer's cleaning instructions. Mild soap, water and a soft cloth may be suitable for many helmet components, but avoid strong solvents and harsh chemicals unless specifically approved.

If the comfort pads are removable and washable, clean them according to the instructions and allow them to dry completely before reinstalling them.

For detailed care advice, read our helmet cleaning guide.

Kids Helmet Buying Checklist

• Choose a helmet intended for the child's activity.
• Check the applicable safety labeling.
• Measure the child's actual head circumference.
• Use the manufacturer's size chart.
• Do not choose size by age alone.
• Do not buy an oversized helmet to grow into.
• Make sure the helmet sits level.
• Check that it sits low enough on the forehead.
• Adjust the internal fit system.
• Position side straps correctly.
• Fasten and adjust the chin strap.
• Check for excessive helmet movement.
• Consider ventilation and comfort.
• Recheck the fit as the child grows.
• Replace a damaged or impacted helmet according to manufacturer guidance.

Frequently Asked Questions About Kids Helmets

How do I know what size helmet my child needs?

Measure around the widest part of the child's head in centimeters and compare the measurement with the manufacturer's size chart for the exact helmet model.

Can I choose a child's helmet based on age?

Age can be a rough product category, but it should not replace an actual head measurement. Children of the same age can have different head sizes.

Should I buy a bigger helmet so my child can grow into it?

No. Choose a helmet that fits the child's current head measurement and can be adjusted correctly. A substantially oversized helmet may move excessively or sit in the wrong position.

Where should a child's bicycle helmet sit?

The helmet should generally sit level and low on the forehead rather than being pushed far backward. Approximately one or two finger-widths above the eyebrows is a commonly used fitting reference.

How should the side straps fit?

On many bicycle helmets, the straps form a V around the ears, with the adjustment slider positioned close to the ear. Follow the manufacturer's instructions for the exact model.

How tight should a child's chin strap be?

The chin strap should be comfortably snug. A common reference is enough room for approximately one or two fingers between the strap and the chin.

What safety standard should a kids bicycle helmet have in the USA?

Bicycle helmets covered by U.S. requirements are subject to the CPSC bicycle helmet standard in 16 CFR Part 1203. Check the product and physical helmet labeling for the applicable compliance information.

Should I replace my child's helmet after a crash?

If the helmet received an impact, follow the manufacturer's replacement instructions. Bicycle helmets can have impact-related damage that is not always visible externally.

Final Thoughts on Choosing a Kids Helmet

A good kids helmet buying decision begins with the child's actual head measurement rather than age, color or appearance. Choose a helmet designed for the activity, check the applicable safety labeling and use the manufacturer's size chart to identify an appropriate starting size.

After selecting the size, make sure the helmet sits level and securely on the child's head. Adjust the internal fit system, position the side straps correctly and fasten the chin buckle every time the helmet is worn.

Do not purchase an oversized helmet simply for future growth. Recheck the fit as the child grows and replace the helmet when it becomes too small, is damaged or has received an impact that requires replacement under the manufacturer's guidance.

For the complete helmet selection process, return to our helmet buying guide. You can also use our bicycle helmet buying guide, helmet safety standards guide, helmet size guide, head measurement guide, helmet fit guide, helmet strap and retention system guide, helmet ventilation guide, helmet replacement guide, and helmet cleaning guide for more detailed information.