Kids Bike Helmet | Mavic
A kids bike helmet goes with young riders from their first wobbly pedal strokes to family rides and their first trails on a mountain bike. The Junior Explorer from Mavic is a children's bike helmet made for first off-road adventures. The Junior Explorer kids cycle helmet is easy to adjust thanks to its Lockstrap straps.
No product found, try removing filters.
Junior Explorer kids MTB helmet: family rides and trails
The Junior Explorer is a Mavic kids MTB helmet made for first off-road adventures, in size S for a 51 to 56 cm head circumference.
The Junior Explorer weighs 320 g and goes with your child from learning to ride on the park path to a green-graded loop at a trail centre or along a forest track behind the family. For first singletrack descents, the Junior Explorer also sits in the Mavic range of mountain bike helmets, alongside adult models built for trail and enduro riding.
The Junior Explorer is checked against your child's measurement on four figures: the head range of size S, the weight, the safety standard and the fit system.
| Model | Recommended use | Size | Head circumference (cm) | Standard | Weight (g) | Fit system |
| Junior Explorer | family rides and first trails | S | 51–56 | EN 1078 + A1 | 320 | ErgoHold retention, Lockstrap straps |
Head circumference and age: from toddler to teenager
Measured head circumference, not age, sets the size of a child bike helmet from toddler to teenager: size S of the Junior Explorer covers 51 to 56 cm.
Cycle helmet for kids aged 2 or 3: head size first
A cycle helmet for kids aged 2 or 3 usually has to fit a head under 51 cm: WHO growth tables put the median head circumference below 50 cm at those ages.
The Junior Explorer in size S needs a measurement of at least 51 cm, and Mavic makes no smaller kids' helmet: measure your child's head before buying a helmet for the first balance bike.
Junior cycle helmet for teenagers: beyond 56 cm
A junior cycle helmet for a teenager is found among adult helmets once head circumference passes 56 cm, the upper limit of the Junior Explorer in size S.
A teenager who commutes by bike through town finds a larger size among Mavic urban helmets, made for daily city riding and cycle lanes. A teenager who rides club runs and long group rides on the road chooses from the road bike helmets Mavic designs for fast riding on tarmac.
ErgoHold fit and chin strap for first rides and trails
A correctly fitted kids' helmet stays still on your child's head when they shake it: the ErgoHold retention system of the Junior Explorer tightens with micrometric adjustment to reach that point.
On a well-fitted kids bicycle helmet, the front edge sits two fingers above the eyebrows and the side straps meet just below each ear. The fastened chin strap leaves room for one or two fingers under the chin, without pressing on the throat.
Once locked, the Lockstrap straps of the Junior Explorer keep the length you set: before a family ride or a kids' mountain bike club session, your child buckles the chin strap and sets off without redoing the fit.
Girls' or boys' bike helmet: same size, same standard
A girls' bike helmet and a boys' bike helmet are the same product at Mavic: the Junior Explorer kids' helmet comes in size S with EN 1078 + A1 certification.
The Junior Explorer comes in three colours: your child picks one, then puts it on for the ride along the canal towpath. Choosing a helmet for a girl or a boy comes down to fit, not gender.
The EN 1078 + A1 standard, applied to the Junior Explorer under Regulation (EU) 2016/425, covers helmets for pedal cyclists and for users of skateboards and roller skates.