The stealthy ASPENX | KASK Khimera revolutionary ventilation system guarantees optimum, adjustable airflow, with separate ports for anti-fog performance and air exhaust. A quick-dry soft-wind liner provides outstanding comfort even in the most challenging conditions. The liner can be easily removed via the proprietary click-in system, and a secure and precise fit is guaranteed by the patented self-adjusting Fit-System, which mimics the wearer’s head shape.