Designed for comfort, performance and coverage, all without draining your wallet. Focusing on the details, our helmets feature a dual density EPS liner, injection molded polycarbonate/ABS shell, adjustable visor and integrated ventilation for class-leading performance. Wherever your ride takes you, the Sector and Sector MIPS helmets are up to the task. Dual density EPS liner features extensive venting Injection molded polycarbonate/ABS shell Fully adjustable visor Removable/washable moisture wicking liner Flexible rubber nose piece Hi-flow mouth vent with filter Rear shell shape easily repositions the goggle strap DOT & ECE MENS HELMET FITMENT in cm SIZE XS S M L XL 2XL 3XL 4XL HEAD SIZE 20 7/8" - 21 1/4" 21 3/8" - 22" 22 1/8" - 22 7/8" 23 1/2" - 23 7/8" 24" - 24 1/2" 24 5/8" - 25 1/2" 25 5/8" - 26" 26 3/8" - 26 3/4"