This photo is of an ordinary plastic freezer bag.
Bags such as these are abundantly available, very inexpensively, at any American supermarket. This one has a handy tab that slides to ensure that the contents of the bag are sealed airtight. This bag is yet another of the countless, now-ordinary (but historically highly unusual) ways in which we in our daily lives are spared from pollutants (in this case, chiefly bacteria) that harassed and often killed our pre-industrial ancestors – that is, this mundane-to-us plastic freezer bag is yet another of the ways in which our lives are cleaned by capitalism.
