Reach for a polo and mustard sports shorts for a fashionable and edgy ensemble. A pair of black and white athletic shoes will be a stylish accompaniment to your ensemble. Casual combos for gentlemen in their 30s aren't actually that hard, as you can see here.
Reach for a polo and mustard sports shorts to assemble a city casual and stylish ensemble. The whole ensemble comes together when you introduce a pair of tan athletic shoes to the equation. This getup should clear any doubts you had about dressing casually as a gentleman in his thirties.