Joybuy Insights

Choosing a bicycle helmet: how to find the right helmet for city riding, sport and children

Buying a bicycle helmet seems straightforward: choose a colour, check the size and place your order. Yet problems often only become apparent once you start using it. A helmet may fit too loosely, provide poor ventilation or have extra features that add little in practice. Carrying out the right checks beforehand can help you avoid making the wrong purchase.

Common pitfalls when choosing a bicycle helmet

1. Looking only at head circumference

A size such as 55-58 cm does not tell you everything. The shape of your head varies from person to person, and the adjustment system also determines how securely the helmet sits. A bicycle helmet should sit low and straight on your head, without pressure points. The chin strap should fit closely without being tight.

An adjustable bicycle helmet with a dial or adjustable straps can therefore be more practical than a model with just one fixed size.

2. Confusing lighting with visibility

A bicycle helmet with a light can help you stand out more clearly in dark conditions. However, a rear light does not replace bicycle lights, reflectors or lights on your clothing and bicycle. Check the battery too: some models work for only a few hours per charge and then need to be recharged via USB.

3. Treating marketing terms as proof of safety

Terms such as “impact protection”, “dual protection” or “shock absorbing” are difficult to compare without a standard or technical explanation. Look at the stated safety standards and the information on the product page instead. When cycling in the Netherlands, it is sensible to check that the helmet is suitable for its intended use and that the required conformity information is available. A US CPSC or ASTM reference is not automatically the same as a European standards reference.

The key points to check

Size and fit

Measure your head circumference with a flexible tape measure, approximately two fingers above your eyebrows. Compare the measurement with the manufacturer’s size chart:

  • Adults: many models come in around size M or L, but the exact measurements in centimetres vary.
  • Children and young people: choose a children’s bicycle helmet with sufficient adjustment range. A helmet that is already adjusted to its maximum size can quickly become too small.
  • Adjustment mechanism: a dial is useful for everyday use and allows small adjustments.
  • Chin strap: the straps should fit securely beneath your ears. Test the fit again when wearing a hat or thin cycling cap.

According to the product description, the OutdoorMaster Ibex for children has two removable inner liners and an adjustable dial. This can be useful as a child grows or when the inner padding needs washing regularly.

Construction and inner lining

Many bicycle helmets combine an outer shell made from polycarbonate (PC) or ABS with an inner layer of EPS. The exact construction varies from model to model. An in-mould bicycle helmet forms the outer shell and foam layer as a single construction; always check the complete product information and safety markings.

You should replace a helmet after a hard fall, even if there is no visible damage on the outside. The material may have been damaged internally. You should also avoid storing a helmet for long periods in extreme heat, near corrosive cleaning products or in direct sunlight.

Ventilation, weight and extra features

A breathable bicycle helmet has ventilation openings and sometimes internal air channels. More openings can improve airflow, but the design and fit remain important. Also consider features that suit your type of riding:

  • MIPS bicycle helmet: according to OutdoorMaster’s product description, the MIPS system is designed to reduce harmful rotational forces in certain impacts. This is a claim made by the brand; do not regard it as a guarantee of protection in every situation.
  • Bicycle helmet with visor: a visor can keep the sun, rain, mud or branches out of your line of sight. Check whether it is removable and whether it restricts your vision.
  • Bicycle helmet with light: check the charging method, light modes and stated operating time.
  • Mountain bike helmet: often provides extra coverage at the sides and rear.
  • Road bike helmet: generally focuses on low weight and airflow.
  • BMX helmet or full-face bicycle helmet: better suited to more intensive disciplines, but usually heavier and warmer than an open model.

Our recommendations by user profile

Suitable for: Budget-conscious beginners
DKONI HS-086 Adult Bicycle Helmet with Light Blue-Purple L 58-61cm

DKONI HS-086 Adult Bicycle Helmet with Light Blue-Purple L 58-61cm

Why it suits this profile: This bicycle helmet is designed for city rides and commuting. The stated L size fits a head circumference of 58-61 cm, and the removable rear light can be recharged via USB.

How this product avoids the pitfall

The size indication is linked to a specific head circumference. You can also remove the light to charge it separately.

Key benefit & highlights

PC/EPS construction, 15 ventilation openings and a USB-rechargeable rear light with two light modes, according to the product description.

Suitable for: Buyers looking for top quality
OutdoorMaster MIPS Gem I Adults Recreational Cycling Helmet

OutdoorMaster MIPS Gem I Adults Recreational Cycling Helmet - Pavement White M

Why it suits this profile: This model is intended for adult cyclists who want to use one helmet for mountain biking, road cycling, BMX and skating.

How this product avoids the pitfall

The fit can be adjusted with a dial and two removable liners. This helps prevent the inner lining from being too loose or too tight.

Key benefit & highlights

MIPS system according to the product description, 25 ventilation openings and a removable visor.

Suitable for: Specific uses & intensive riders
OutdoorMaster Full Face Mountain Bike Helmet for downhill and BMX

OutdoorMaster Full Face Mountain Bike Helmet for Men & Women-Red, L

Why it suits this profile: According to the product description, this full-face bicycle helmet is intended for downhill, BMX and intensive mountain biking. The chin guard provides more coverage than an open helmet.

How this product avoids the pitfall

The product information states a clear intended use. This makes it less likely that you will choose an open city helmet for a discipline where more coverage is desirable.

Key benefit & highlights

ABS outer shell, EPP inner lining, 27 ventilation channels and an adjustable visor, according to the product description.

Suitable for: Parents of young cyclists
RoyalBaby Helmet Everest Blue for children

RoyalBaby Helmet Everest Blue, Net Weight 0.25kg

Why it suits this profile: According to the product description, this children’s bicycle helmet is suitable for children aged 5 to 13, with an adjustment range of 52,05-55,88 cm.

How this product avoids the pitfall

The dial and adjustable strap allow you to customise the fit. The inner lining is removable and washable.

Key benefit & highlights

PC outer shell, EPS inner layer, 10 ventilation openings and a stated weight of approximately 213 grams.

How to check the fit in practice

  1. Place the helmet horizontally on your head; the front should not sit far above your forehead.
  2. Tighten the adjustment system until the helmet feels secure without uncomfortable pressure.
  3. Open your mouth. The chin strap may tighten slightly, but it should not press against your throat.
  4. Gently shake your head. The helmet should not move forwards, backwards or from side to side.
  5. Check that the ventilation openings, visor or glasses do not obstruct your vision.

Looking for more options?

We have put together a complete, up-to-date list of products that fully meet these strict selection criteria and the applicable European safety regulations.

Frequently asked questions about bicycle helmets

How long does a bicycle helmet last?

Its service life depends on the materials, storage conditions, use and any impacts. Replace the helmet immediately after a hard fall. Some manufacturers also recommend replacing certain models after several years, as materials can deteriorate over time. Follow the instructions and regularly check the shell, straps, buckle and inner lining.

Is a bicycle helmet with a light enough for cycling in the dark?

No. An integrated rear light is designed to increase your visibility, but it does not replace legally required bicycle lighting or reflectors. Before every ride, check that your USB-rechargeable bicycle helmet has sufficient charge and use suitable lights on your bicycle too.

How much does a MIPS bicycle helmet cost?

The price varies depending on the brand, size, materials and extra features such as a visor, lighting or removable liners. So do not compare the price alone: also consider the size range, fit, ventilation, safety information and intended use.