A standard plain-white Kard-o-Seal Beutel, made a lot
more interesting by a lively sticker. Distressingly upside-down in the
picture to the left because of this site's strict quality-control rules:
the opening must appear on the left.
No, I don't know if the sticker comes as standard with
this carrier's bags, or whether the user has to apply it him/herself.
Thanks to Josef Gebele.