A navy plaid suit and a black turtleneck combined together are a good match. And if you want to instantly spruce up your outfit with one single item, why not add black leather derby shoes to the equation? A vivid example for anyone who's not sure how to dress after 40.
When the occasion calls for an effortlessly smart menswear style, team a navy plaid suit with a black turtleneck. Black leather derby shoes will add a classier twist to an otherwise mostly casual ensemble. Great but also age-appropriate, a look like this will help upstage any of your peers.