A cycling helmet can make an important difference in a crash. But even a good helmet cannot protect properly if it is the wrong size or loose on your head. Prioritise the right size, a suitable shape and secure positioning over price or the number of technologies listed.
Size and shape come first
How a helmet fits matters more than its price or feature list.
Size by head circumference
Sizes are based on head circumference in centimetres. Check the range given for the particular model.
Shapes vary between models
Two helmets with the same stated size can fit differently. Shell shapes vary between brands and models.
Secure without pressure points
The helmet should stay stable without moving, while avoiding local pressure or discomfort.
Measuring your head: use a flexible tape roughly 1–2 cm above your eyebrows, around the widest part of your head. If you fall between sizes, also consider any thin cap you plan to wear beneath the helmet when trying it on.
Positioning and adjusting your helmet
Even the right helmet needs correct positioning and adjustment.
1
Wear the helmet level, rather than tilted back. Its front edge should sit roughly halfway down the forehead, covering it without riding too high.
2
Tighten the rear adjustment dial until the helmet stays stable even before the chin strap is fastened.
3
Fasten the chin strap last. When correctly adjusted, no more than two fingers should fit underneath it.
Check the fit: tilt your head forwards and back, then gently shake it. The helmet shouldn’t slide freely forwards, backwards or sideways. If it still moves after adjustment, try another model or size.
Useful technologies and features
Not every feature is essential, but some add comfort or protection for sportier riding.
InMold
The inner EPS foam is bonded to the outer shell. Common in quality cycling helmets, this construction helps combine low weight with strength.
MIPS
Additional protection against rotational forces in angled impacts, useful for performance riding too.
Ventilation
Well-designed vents improve airflow and comfort on longer rides and in warm weather.
Adjustment dial
A simple way to fine-tune a precise, comfortable fit around your head.
Safety and certification
Helmets sold in the Czech Republic must meet the ČSN EN 1078 safety standard. Every helmet in our range meets it, leaving size, shape and comfort as key considerations when choosing.
Helmet life and when to replace it
Replace after a crash
A helmet may have lost some protective capability even without visible damage.
What shortens its life?
Use, UV exposure, temperature changes and poor storage.
Store it dry
Avoid extreme temperatures, such as leaving it in a car in direct sunshine.
Follow the manufacturer’s guidance
Manufacturers generally recommend replacement after several years of normal use, often around five years. The specific interval varies by brand.
Choosing a helmet for a child
The same principles apply as for adults, with even more attention to fit.
A secure fit
A child’s helmet must stay firmly in place. Leaving it loose to avoid pressure isn’t the solution.
Cover the forehead
It should protect the forehead and not slip backwards.
Quick adjustment
Simple systems let parents refine the fit in seconds.
Suitable for a child seat
The helmet shouldn’t prevent the child resting their head against the seat. Some children’s models have a rear shape better suited to this.
Don’t buy a helmet to grow into
An oversized helmet can shift during a crash and provide much less protection. Choose for the child’s current head circumference, without extra growing room.
What matters most
The best helmet fits properly, stays secure and level, and feels comfortable. Size, shape and positioning matter more than price or a long list of technologies.
Where to go next
Choose by head circumference, and visit us to try a helmet on.