An olive camouflage military jacket and a blue denim shirt are both versatile menswear essentials that will integrate really well within your day-to-day wardrobe. Turn up the classiness of this ensemble a bit by finishing off with brown suede dress boots. This combination is a pretty nice idea, especially for fall, when the temps are falling. When it comes to fashion tips for gentlemen in their thirties, this ensemble looks good on most gents.