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Marker Kojo Youth Helmet for Ski / Snowboard

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our part num: B-166400.12-Y

For the kid who's the kind of skier who fears no obstacle or ramp. These skiers need the durable KOJO – great style and even greater function. The Kojo’s construction and performance mirror the prime quality and safety featured with the adult oriented KOJAK. Thanks to the MarkAIR CHANNEL SYSTEM, your head has the enhanced ventilation. The custom PARK FIT SYSTEM ensures that the new KOJO adjusts to your head size quickly and ergonomically.

Additional Features Include:

  • ABS hardshell construction
  • EPS foam
  • MarkAir channel adjustable ventilation system
  • RTS (rotate-to-size) fit system cinches down with just the turn of a knob, making it easy for small hands.
  • Audio system compatible
  • Removable ear pads

ABS HARDSHELL CONSTRUCTION involves a light EPS core for impact absorption and an ultra-thin but rigid ABS outer shell. It has been specially engineered to fit the EPS core, completely enveloping it in an physically durable shell. This helps ensure the best possible distribution of force in the event of an impact. The rugged ABS surface is also resistant to scratches and dents – so this lightweight helmet will still look great even after many days of hard use.

RTS YOUTH FIT SYSTEM An adjustment dial mechanism on the rear of the helmet lets you adapt it to your personal head shape in seconds. For greatest possible wearing comfort, a tight fit and heightened protection. One-handed operation, even with ski gloves on. Broad configuration range, so this helmet will grow along with the wearer!

MARKAIR CHANNEL VENTILATION SYSTEM Clear vision and a cool head. The complex MarkAIR CHANNEL SYSTEM, used in all MARKER helmets, is the most advanced temperature regulation system available. It consists of a precisely calculated network of vent openings and air channels to combine the ventilation of the outer shell with interior channels of the EPS foam core. This allows the MarkAIR CHANNEL SYSTEM to literally “draw” the warm, moist air out of the goggles, “sucking” it along the air channels and out of the helmet to reduce significantly any fogging of the goggles. At the same time there is a constant and pleasant flow of air to cool the entire system and regulate it automatically. This ensures a cool head whatever the situation, without need for manual adjustments.

REMOVABLE EARPADS – AUDIO READY The ergonomic design of the removable ear padding ensures a comfortable fit and very good thermal insulation. All ear pads (excluding KOJO) are naturally also AUDIO READY for all current systems, meaning they work with your sound system and/or mobile phone. They can be removed quickly to make it easier to hear what‘s going on around you. The EARPADS can be hand-washed in lukewarm water.

AIR JAM CLIMATE CONTROL The AIR JAM CLIMATE CONTROL allows for regulation of the air flow using a waterproof, folding interior lining. When the openings are closed, they provide a warm and dry air cushion that is especially helpful in keeping the head from getting chilled on cold days. On warm days the vents can be unblocked to generate maximum airflow within MarkAir CHANNEL SYSTEM.


All MARKER IN-MOLD and HYBRID SHELL helmets have an additional polycarbonate plate on their lower edge for extra protection in the event of a side impact. This also protects the helmet against dings and dents during transport or daily usage. The various models come with 180°, 270° or 360° EDGE PROTECTION.


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Marker Size Chart

Marker Ski Helmets and Armor Size Charts

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Marker Ski Helmets Size Charts

How to Measure Your Head for Marker Ski Helmets


Marker Adult Ski Helmets Sizes

Size Head Circumference
Small 51-55cm
Medium 55-59cm
Large 59-63cm


Marker Women's Ski Helmets Sizes
Size Head Circumference
Small 51-55cm
Medium 55-59cm
Large 59-63cm


Marker Youth Ski Helmets Sizes
Size Head Circumference
Youth One Size 51-56cm


Marker Body Vest Size Chart

How to Measure Yourself for Marker Body Vests 

Marker Body Vests
Size Chest Circumference
Youth Extra Small/Small in
Youth Medium/Large in
Adult Extra Small in
Adult Small in
Adult Medium in
Adult Large in


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