Bought this cover for the Thomas Nelson NKJV Study Bible. I tried to determine size by going from cover measurements and the measurements listed for the Bible. It's a little big. I probably could have gotten the large and it would have fit.
I purchased three of these extra-large covers a few days ago (in black, blue, and burgundy) to keep three of my favorite Bibles in (all different translations and bindings, but all similar in size). They arrived earlier today (sooner than I thought they'd get here - thank you, CBD!) and I unpacked, inspected, and put each one of them to work - I'm very impressed! Thanks again!