Vintage UK British Letter bag. White. Used, authentic British Royal Mail nylon letter bag in white. Size: A4 size compatible. Color: White Material: Nylon Wrinkles from storage are present. The zippered bag has a clear vinyl front, allowing you to see the contents. It has a large capacity, perfectly fitting A4 size items, and the 10cm depth can accommodate thicker items. The eye-catching design is perfect as an accent, such as a bag-in-bag or clutch bag, and it also excels as a bag-in-bag. This is a rare white type.