i think he means like a flat glass finish eaither side so it is transparent, only late golfs and VAG cars have them, earlier "new" golfs have the ones that are knobbly plastic on the inside so they appear white/clear, i did measure the new proepr clear ones and they a larger then my 16v repeaters and very expensive to buy, but they do look mint,m not sure if the will show the sing etc underneath,