Cairns® 664 Invader Composite Fire Helmet
Lightweight performance. Through-color durability. Modern Cairns design.
One of the lightest helmets in the MSA Cairns lineup, the Cairns 664 Invader Composite Fire Helmet delivers dependable structural protection in a lightweight, well-balanced design. Built with through-color DuraGlas® composite construction, the 664 offers exceptional durability, all-day comfort, and long-term wear resistance without the maintenance concerns of painted shells.
Designed as a modern-style helmet similar to the popular 660C Metro, the 664 shares the same trusted internal components and accessory compatibility. The primary difference is the shell construction—using through-color DuraGlas means scratches and wear do not expose underlying material, helping maintain a clean, professional appearance throughout the helmet’s service life.
Key Features
- One of the lightest structural fire helmets in the Cairns product line
- Ultra-tough DuraGlas® thermoplastic composite shell resists cracking and chipping
- Through-color shell construction maintains appearance even with wear
- Low-ride helmet design improves balance and reduces fatigue
- Full-brim protection helps shield against water and debris runoff
- High-temperature TPR edge trim will not melt or drip
- Exclusive shell-release system improves protection and simplifies component replacement
- Meets and exceeds NFPA 1971 (2018 Edition) requirements
Fit, Balance, and Comfort
The 664 Invader is engineered to provide a secure and comfortable fit across a wide range of head sizes while maintaining helmet stability during interior and exterior operations.
- SCBA-interface front headband adjustment designed to align with SCBA facepieces
- Three-position rear ratchet height adjustment for customized helmet positioning
- Adjustable sizing range from 6 3/8″ to 8 3/8″
- Matte shell finish reduces glare and provides a modern appearance
Impact Cap and Protection System
- High-temperature, water-based foam impact cap will not burn or char
- Tube-lock shock absorption system enhances impact protection
- Easy front and rear adjustment tabs allow quick fit changes
Eye and Face Protection Options
Defender® Retractable Visor
- Retracts into helmet shell to stay clean until deployment
- Easily raised or lowered while wearing gloves
- Optically correct lens reduces peripheral distortion
- Tool-free visor removal allows quick lens replacement
- NFPA compliant and meets ANSI Z87.1+ impact requirements
ESS Goggles
- Low-profile NFPA-compliant design fits over most prescription eyewear
- High-temperature frame allows quick lens replacement
- Patented Speed Clips allow strap adjustment with gloves
- Snap-on / snap-off mounting system
- Can be worn independently or combined with faceshields
4″ Tuffshield® Visor
- Heat resistant up to 500°F
- Higher impact resistance than standard visor materials
- Amber tint improves contrast and visibility in varying lighting conditions
- NFPA compliant
- Meets ANSI Z87.1+ impact standards
Shell Construction
- Ultra-tough DuraGlas composite material engineered specifically for fire helmet performance
- Through-color, non-painted shell for rugged long-term durability
- Matte finish provides modern styling firefighters prefer
Standard vs Deluxe Configuration Comparison
CFR-Style Configuration (Optional)
CFR-style helmets include:
- 6″ gold-coated faceshield
- Flannel headband liner
- CFR aluminized bonnet with PBI/Kevlar shroud
- Nomex earlaps
- Nomex chinstrap with quick-release buckle and Postman’s slide
Interchangeable Components
- Compatible with Cairns 660C Metro accessories
- Allows departments to reuse existing parts and reduce replacement costs
Available Colors
- Black
- Red
- Yellow
- White
Compliance and Certification
- NFPA 1971-2018 compliant
- Designed and tested to exceed performance requirements
Customization
- Compatible with 4″ leather helmet fronts (sold separately)
Cairns® 664 Invader Composite Fire Helmet
Lightweight by design. Durable through-color construction. A modern Cairns helmet built for firefighters who demand balance, comfort, and long-term performance.
