The new small zipped shop bag is listed as 12.8 x 8.1. The Pop Tote is listed as 12.8 x 8.7. Is the new small shop bag really the size of the Pop Tote? The original small shop bag was quite a bit smaller (listed as 10.25 x 6).
In the picture posted on the blog entry, the zipped and non zipped shop bags look to be of a similar size.
fwiw, When I measure my Pop Tote, I got 13.5 or so, which is why I'm asking if you changed the way you measure.