For the man who just wants to say "Yes, I'm married."
This boring men's ring is 6mm wide; the perfect width to be minimally conspicuous-while not so thin it could be mistaken for a ladies ring. The material is 14k yellow gold, because you don't want to be too flashy with 18k gold, or go out of your way to say "I'm cheap" like the choice of a 10k band would clearly communicate. White gold probably isn't traditional enough.
The half round design (meaning the outside is rounded, while the interior is flat) is simple, predictable, and safe. You could get a comfort fit band, but nothing says "I'm comfortable enough" like this ring. Plus, comfort fit is a bit more expensive.
The choice of this ring is perfectly acceptable. It will draw neither negative nor positive attention. Your friends won't ask to see it. They won't care where you bought it, or how much or little it cost. It has no story to tell beyond the obvious. It speaks nothing of your personal style or aesthetic-which is probably best.
Priced at $555, it's medium, medium, medium. You are
settling down after all...
Or, you could shop for Unique Men's Rings