Keep your documents clean and pristine and avoid costly transportation delays with Labelmaster’s Back Loading Blank Envelopes. These protect important invoices and shipping papers from damage caused by dirt or moisture. They come in your choice of clear or white opaque plastic, heavy duty vinyl or press-on zipper lock styles. Each of them has a tamper-evident storage pocket that must be torn or cut open to retrieve the contents. Their pressure-sensitive adhesive sticks to just about anything, making them usable with any kind of shipping container. Back loading shipping envelopes are a smart and economical way to keep your transportation documents intact.