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Purchase Item: GMax OF-77 Derk Open Face Helmet
  • SKU: HEGX7247
    GMax OF-77 Derk Open Face Helmet

  • $104.95

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OF-77 Derk Open Face Helmet
#72-4758

The OF-77 features the all new SpaSoft Coolmax interior which combines the moisture wicking properties of Coolmax with the anti-microbial properties of bamboo. The OF-77 is like having two helmets in one. It offers the comfort of an open face helmet with the ability to quickly and easily convert into a full face helmet with the installation of the optional snap-in jaw piece.

  • New SpaSoft DuPont Coolmax® interior keeps you dry and comfortable. Coolmax® wicks moisture away from your body and dries quickly. Charcoal bamboo fiber keeps odors away by eliminating bacterial growth
  • Removable, adjustable, washable Spa Soft Coolmax® interior allows for easy cleaning and custom fitting
  • GMAX D.E.V.S (dual exhaust venting system) top and rear vents reduce temperature by allowing hot air to escape from the top of the helmet
  • Vents close to completely seal out the cold
  • 100% UV400 protection from the anti-scratch hard coated face shield for a longer lasting clear view
  • Tinted inner sun shade with anti-fog coating
  • Lightweight ABS shell. Large size only 3.2 lbs.
  • Optional anti-fog, maximum seal double lens face shield available P/N 72-3547
  • Optional brake light kit available P/N 72-3781
  • Optional snap-in jaw piece with breath guard and chin curtain available P/N 72-3570
  • DOT approved
  • Lightweight Poly Alloy Shell

Sizing instructions:
To find your approximate size measure the circumference of your head one-inch above eyebrows and across the largest portion of the back of your head. 

Sizing guideline (head circumference inched measured above the eyebrow)

XS: 20 7/8 to 21 1/4
Small: 21 5/8 to 22
Medium: 22 7/16 to 22 3/4
Large: 23 1/8 to 23 5/8
XL: 24 to 24 3/8
2XL: 24 3/4 to 25 3/16
3XL: 25 9/16 to 26

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