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GMax Youth AT-21S Adventure Snow Helmet

The GMax AT-21S Snow Helmet is an ECE-rated helmet designed to exceed your needs on the snow while doubling as your next adventure touring lid for the road.. An amber inner sun shield, speaker pockets and a moisture-wicking Coolmax CORE lining add comfort to the interior. A lightweight polycarbonate shell, dual pane anti-fog lens and included breath box keep the outside elements at bay. 

Features: 

  • Lightweight polycarbonate shell
  • Dual pane anti-fog snow lens
  • Drop down amber inner sun shield
  • Quick release buckle system
  • Removable, washable antimicrobial liner
  • Speaker pockets
  • Removable sun peak
  • DOT and ECE certified 
Product Style RevZilla Item # Store Sku MFR. Product # Availability
Product Style Grey/Black / Youth SM RevZilla Item #1762938 Store Sku MFR. Product #G2211500 AvailabilityOnly 1 Left: Ships within 24 hours

GMax Youth Helmet Sizing

Size Head (cm)
Youth SM 49 - 50
Youth SM/MD 50 - 51
Youth MD 51 - 52
Youth LG 53 - 54
Youth LG/XL 52 - 53

Sizing information is provided by the manufacturer and does not guarantee a perfect fit.


How to Measure

  • H Head
    Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, repeat for good measure and use the largest measurement.
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