9mm Helmet Comfort Liner

HIGHWAY 21 9mm Helmet Comfort Liner

Upgrade your ride-day comfort with the HIGHWAY 21 9mm Helmet Comfort Liner — a thin, breathable replacement liner engineered for all-day wear and improved fit inside most modular and open-face helmets.

• Thickness: 9mm for a snug, secure fit without bulk
• Material: Moisture-wicking, quick-dry fabric to reduce sweat and odors
• Breathability: Perforated knit construction promotes airflow for cooler rides
• Compatibility: Designed to fit a wide range of helmet shells and cheek pad systems
• Easy care: Machine washable for fast maintenance between rides

Whether you're replacing a worn liner or fine-tuning helmet fit, this HIGHWAY 21 liner delivers light padding and consistent comfort. Ideal for commuters and weekend riders who want a better fit, improved hygiene and lasting freshness.

Key benefits: reduced pressure points, enhanced ventilation, and a cleaner helmet interior — fast install, long-lasting comfort.