Bobster Road Master Sunglasses (BLACK) Plastic frame Plastic lens Non-Polarized Dominate the road with this convertible photochromic eyewear. The adjustable strap allows easy conversion from sunglass to goggle, while the photochromic polycarbonate lenses lighten when indoors and darken when exposed to sunlight. Removable closed cell foam adds comfort for extended periods of wear while protecting the eyes from dust and debris. Photochromic lenses (V.L.T. 33%-19%).