The legendary A1 MIPS® helmet is the ultimate all-mountain helmet from Troy Lee Designs for those seeking a lightweight helmet with exceptional fit, outstanding safety, and high comfort. Whether you're riding singletracks, dirt trails, or covering countless miles on your XC bike, the A1 MIPS® is your go-to companion. Equipped with a fiber-reinforced outer shell and the MIPS® system, which reduces rotational forces during angled impacts, along with an EPS inner shell, it offers excellent comprehensive protection in the event of a crash. The Hi-Flow cooling system with 16 air vents ensures excellent ventilation, while the ultra-soft comfort headliner is removable and washable. The quick-dry feature enhances wearing comfort further, and the adjustable flip-buckle strap dividers allow customization to different head shapes. Outer shell: 100% Polycarbonate. Inner shell: 100% Expanded Polystyrene (EPS). Liner: 100% Polyester. Exceeds certifications: CPSC 1203, CE EN 1078, AS/NZS 2063