Oakley Bisphaera OO9400 940011 sunglasses combine a large-format rectangular frame with photochromic lenses for adaptable vision across changing light conditions. Key attributes: Grey Smoke | Nylon | Photochromic lenses (clear to black) | Polycarbonate lens material | Prescription compatible | Includes original case and microfiber cloth | Rectangular frame | Wide-coverage silhouette | Shiny finish | Dimensions & fit: Calibre: 68 mm | Bridge: 6 mm | Temple: 136 mm | Height: 41 mm | Composition & care: Frame: Nylon | Lens: Polycarbonate | Wipe lenses with a microfiber cloth; avoid abrasive cleaners and strong solvents.