To my surprise, I have discovered a wardrobe hole and am hoping that someone out there may have some suggestions WRT the shoes part of it. I have a series of gruelling speaking engagements to dress for, that involve being actively on my feet for a large part of each 14-hour day, for 3 days back to back each time. There is a specific dress requirement of business formal that is invisible, such that my clothes and shoes will in no way distract the audience from what I'm saying.

Normally, for speaking engagements I would wear my most conservative pointy-toe slim heels, but after wearing those for 14 hours recently, my feet hurt for several days afterwards, such that I needed to wear Dr Martens for the next week. Dr Martens would of course be comfortable but they do not in any way meet the criterion of "invisible business formal". I realised that despite my large footwear collection I do not own any suitable shoes, and I wonder if anyone here can recommend any soft leather super-comfortable (no pointy toes) invisible business formal (boring) shoes rather than ones that are trendy or eye catching in any way?

My feet are wide and shallow, BTW.

Sarah