For an effortlessly neat outfit, wear a dress shirt with navy chinos — these items go really great together. Dark brown derby shoes will give an extra dose of style to an otherwise mostly casual ensemble. In your thirties, you probably want to start dressing maturely. That's when inspo like this is very useful.
Reach for a dress shirt and blue jeans and you'll exude masculine refinement and class. In the footwear department, go for something on the classier end of the spectrum and complete this look with dark brown derby shoes. As you pass the big 3-0, you probably want to start dressing more professionally. In this case, outfits like this are ideal as inspiration.