Wear a burgundy plaid wool blazer and khaki dress pants to look like a true fashion guru. The whole ensemble comes together if you add loafers. This look is most probably exactly what you're looking for as a gentleman in his forties.
Khaki Dress Pants with Loafers Dressy Outfits For Men After 40
Combining a light blue long sleeve shirt and khaki dress pants will be a true demonstration of your expert styling. When not sure as to what to wear in the shoe department, stick to loafers. So if you're scouting for a great but also age-appropriate combination, this one fits the bill.