Troy Lee A1 Reflex Helmet: High performance XC & All Mountain lid Reinforced polycarbonate shell in-molded with the EPS liner Extended sides & back for maximum protection & durability 16 brilliantly designed vents maximise airflow across the whole head 3 position adjustable retention system for custom fit, eyewear & wonky head compatibility One piece, sweat absorbing, fast drying, removable, washable liner Anti-microbial padding Adjustable moto-style peak with alloy nuts & bolts One of the best fitting helmets available