With the A1 helmet, we at Troy Lee Designs returned to the aggressive all-mountain half shell category.

Details : 

• Reinforced polycarbonate shell in-molded with the EPS liner extends down the sides and back of the head for maximum protection and durability
• MIPS brain protection system, reduces rotational forces to the brain
• 8 pressurized intake passages draw in cool air for maximum ventilation
• 8 rear vacuum vortex outlets help exhaust and draw heat from head
• Triple position adjustable retention system allows customized fit for various eyewear, head shape and riding styles
• Single piece, ultra plush, removable and washable comfort liner made of anti-microbial moisture wicking material for a dry, comfortable feel
• Full spectrum adjustable moto inspired visor with anodized aluminum hardware
• Race inspired styling