Photochromatic Helmet Face Shield Tint: Photochromatic Prevents Dirt, Dust, Debris from entering in the helmet Works with any Zamp helmet calling for the Z-20 Series Faceshield Including RZ-35, RZ-58, & RZ-44 Go from bright to dark racing conditons without having to change shields! Smoothly transitions from clear to dark smoke (or vice versa) depending on the brightness of the track, without having to change the shield! One Shield works for Night or Day Tear off Note: If your tear offs are not allowing the photochromatic to work, it is because the tear off or adhesive is blocking the UV light Bryke Racing Part #: ZAMP HASZ20CL