Zamp Z-20 DIRT Series Helmet Shield CHOP2XL it is because the tear

it is because the tear off or adhesive is blocking the UV light

it means that these are not suitable for open-top car racing or for karting

Zamp Z-2 Series helmet shield

Earmuffs: Noise attenuating

Zamp Z-20 DIRT Series Helmet Shield CHOP2XL it is because the tearThese DIRT specific Z 20 Series Shields are built to seal and prevent dirt and debris from entering your helmet through the top of the shield. Available Color Options: Clear Clear Anti Fog Pit Stop USA offers Zamp Z 20 DIRT Series Shield Clear & Clear Anti Fog at low everyday prices. Be sure to check out all our products from Zamp Racing including Zamp Helmet Shields and Accessories.