The Kask Zen FF Air- Full Face Visor for Kask Zenith Helmets feature a panoramic lens with micro ventilation holes and treated for anti-fog and scratch resistance. This visor has an ergonomic, reinforced frame to protect your face from debris. NOTE: To attach Zen Visor to your helmet you will need a Kask Adapter set. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.