@Rob6 super appreciate all of the work you put into trying to find this answer on your own without "bugging" us! That said, we're always happy to consult!

In general, and you likely already know this, Keens tend to run ~1/2 size small, so we typically advise sizing up. Since you already have a pair of Keen Targhee Vents and know how they fit, we'd recommend sticking with the same size you have when you purchase the Newport H2 sandals. With that said, here's our disclaimer: although the length and last should be similar between the two models, sandals will always feel/fit a bit different from fully enclosed shoes!

We hope this helps!

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