A light blue vertical striped short sleeve shirt and shorts have become bona fide off-duty styles for most gentlemen. You can take a more casual approach with shoes and finish with a pair of beige athletic shoes. You totally can keep your cool under the sweltering heat. The proof is right here Perfect for a 30-year-old if you want to project a more relaxed image.
For a casual ensemble, consider wearing a dark brown suede shirt jacket and shorts — these pieces play pretty good together. Amp up your outfit by finishing off with beige athletic shoes. Naturally, it's easier to work through a baking hot day in a breezy ensemble like this one. Gentlemen who are curious how to pull off modern casual outfits as you go into your 30s, you have your answer.