Made by Aioi Envelope, now defunct No. 4 Window Envelope 90 x 205 mm Thickness: 85g/㎡ 100 sheets Photos 1-3 are samples. The 100-sheet bundle will be broken down, and measures will be taken to prevent water damage before shipping. I bought a box of these, and these are the leftovers. The postal code box is for 5 digits. Please consider this if you don't mind. Although unused, these have been stored for a long time, so please understand. #WindowEnvelopes #No4Envelopes