I get sturdy, waterproof, lockable carrier bags with EAN codes and the postage for a stamp. http://w ww.butter-barcodes.swissmilk.ch/barcode/promo/hilfe.php
There's no shortage of good bags all round... I've just been on vacation in Austria and was able to stock up there. Nevertheless, I always find it a shame when good products are "improved" for whatever reason. Then the supplier wonders why their products are bypassed and withdraws them from the range "due to lack of demand"! But maybe that's how it's all planned..... (???)