The legendary A1 MIPS® helmet is Troy Lee Designs' all-mountain MTB helmet, ideal for anyone seeking a lightweight helmet with exceptional fit, outstanding safety, and great comfort. Whether on singletracks, dirt riding, or covering countless miles on an XC bike, the A1 MIPS® is the perfect choice. Equipped with a fiber-reinforced outer shell, the MIPS® system (which reduces rotational forces on the head during angled impacts), and an EPS inner shell, it offers excellent comprehensive protection in the event of an accident. The hi-flow cooling system with 16 air vents ensures excellent ventilation, and the ultra-soft comfort head pads are removable and washable. Thanks to the Quick-Dry function, comfort is further enhanced, and adjustable foldable buckle dividers allow for a customized fit for various 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.