Life is easy in the middle years of the sun.

Yet the man could not be of more than middle years.

They don't all have to be in their middle working years.

She was in her middle years but still quite the beauty.

"But actually it's often the middle years when life is most difficult."

One of them stepped forward, a man in his middle years.

Getting on toward middle years, or perhaps a bit past.

A man and a woman, probably in their middle years.

At least this will make a good story in her middle years.

He is also relatively young being short of his middle years.