Replacement liner for the 6D ATR-1 Helmets. The 6D Super Cool Liner is a unique perforated outer fabric combined with an exclusive open-cell 6D mesh material that completely replaces the dense foam. The result is a dramatic increase in air flow. Moisture quickly evaporates, and air can travel through with little restriction, allowing cool air in and heat to escape. When combined with the 6D Air-Gap Technology in the helmet, the performance is unequaled.
The MS size liner falls inbetween the small and medium OEM liner, allowing you to create a custom fit.
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