For a look that's very simple but can be dressed up or down in many different ways, opt for a dress shirt and white and black chinos. No doubt, a popular option if we're talking dressing ideas for mature gentlemen.
White and Black Chinos with Dress Shirt Smart Casual Warm Weather Outfits After 50
Rock a dress shirt with white and black chinos to look elegant but not particularly formal. For something more on the sophisticated end to round off your ensemble, complement this getup with a pair of dark brown suede loafers. A vivid example for any man who's not sure how to dress as a 50-something man.