URLs - category naming conventions

[Switch_Digital]

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[KeriMorgret]

This isn't an answer to your question, but it's adding one more thing to think about. Your URL structure can be helpful when it comes to using Google Analytics. There's a good post on this at the Lunametrics Blog that you might want to check out. From a metrics perspective, it can be helpful to have that category in the URL -- you can look at the analytics for that entire folder at once, which isn't possible with your preference (I'm assuming that there would be multiple contact lens manufacturers in your case).