Kids · Boys'
Boys' Helmets for 5 year olds
Size-matched helmets for 5 year olds, with color and style notes typically preferred by boys in this age range. Fit remains the priority — pattern and color second.
Open the helmets calculatorHelmets picks for 5 year olds
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Giro
Giro Register MIPS
S 51–55 cm, M 55–59 cm, L 59–63 cm
$83.19
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Bell
Bell Nomad MIPS
S 52–56 cm, M 56–60 cm, L 60–64 cm
$64.90
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Smith
Smith Persist MIPS
S 51–55 cm, M 55–59 cm, L 59–63 cm
$145.00
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Poc
POC Omne Air SPIN
S 50–54 cm, M 54–58 cm, L 58–62 cm
$220.00
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Lazer
Lazer Z1 MIPS
S 50–54 cm, M 54–58 cm, L 58–62 cm
$279.99
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Kask
Kask Protone Icon
S 50–54 cm, M 54–58 cm, L 58–62 cm
$300.00
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Troy Lee Designs
Troy Lee Designs A1 MIPS
S 53–56 cm, M 56–59 cm, L 59–62 cm
$177.00
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Abus
Abus Urban-I 3.0
S 52–58 cm, M 58–64 cm
$99.99
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What matters for 5 year olds
Five-year-olds are typically ready for a 16" wheel bike, though smaller children (under 107 cm) may still fit a 14" bike better. At this age, the majority of children have the coordination to ride without training wheels, and many can begin using hand brakes alongside or instead of a coaster brake. The correct fit means your child can sit on the saddle and touch the ground with the balls of their feet — flat-footed contact is no longer necessary. Look for bikes with a simple single-speed drivetrain; gears are unnecessary and add weight and complexity. A quality 16" bike typically weighs 6–8 kg; avoid anything over 9 kg, as heavier bikes are a serious barrier to enjoyment and skill progression.
Helmets sizing guidance
Measure head circumference at the widest point across the forehead. Most brands size: XS (50–53 cm), S (53–56 cm), M (56–59 cm), L (59–62 cm), XL (62+ cm). Kids helmets typically start at 47–50 cm. Always try before buying; fit varies by brand.
Expert tips
- Most 5-year-olds who used a balance bike are ready to ride a pedal bike without training wheels right away
- A 16" bike is the workhorse for this age — plan on getting 1.5 to 2 years of use before sizing up to 20"
- Introduce hand brakes alongside the coaster brake so the child starts building the habit early
- Let your child practice starting and stopping before worrying about long rides
Helmets head-to-head comparisons
Cross-shop the helmets 5 year olds actually consider — specs, fit, and the deciding factor.
Giro Register MIPS vs Bell Nomad MIPS
Two sub-$100 MIPS helmets from the category's biggest brands — the road-leaning Giro Register versus the MTB-ready Bell Nomad. Picking the right one comes down to where you ride, not the price tag.
Kask Protone Icon vs POC Omne Air SPIN
Two premium road helmets the WorldTour actually wears — Team Sky's Kask Protone Icon versus EF's POC Omne Air SPIN. Both ~160 g, both well-vented, but the rotational-impact tech and aero shape are very different.