Features: - RTS Fit System- Xdry Performance Lining- Removable Earpads - Audio Ready- Beanie Ready- Goggle Clip- Integrated lens systemSpecifications:- Construction: ABS Hardshell- Ventilation: MarkAIR Channel System AIR JAM CLIMATE CONTROL- Sizing: OO 47-51 cm / O 51-56 cm- Weight (+/-5%): 545 g- Certification: CE EN 1077:2007 CLASS B