attractive middle-aged man
Wasei-eigo term for a stylish, charming man in his 40s–50s. Often used in fashion or lifestyle contexts. The female counterpart is ナイスミディ.
wasei-eigo (Japanese-coined English), from nice middle
See also: ナイスミディ
He is a true nice middle, with a charm that belies his age.
This brand offers clothing for attractive middle-aged men.