The Fuel biker goggles comes with lenses that get darker in the sun sight and a neoprene foam lined with fleece for additional comfort. The lenses are photochromic starting with a light tint (85% V.L.T.) and transform to a medium grey (25% V.L.T.) in bright UV light. The polycarbonate lenses are shatter resistant and come with an anti-fog coating. Fuel prescription riding glasses also comes with a microfiber pouch for easy transport. Photochromic riding goggles.