This relaxed casual pairing of an olive corduroy long sleeve shirt and a black crew-neck t-shirt is extremely easy to put together in no time flat, helping you look amazing and ready for anything without spending too much time combing through your wardrobe. For something more on the classier side to complement your getup, complement this look with a pair of black leather derby shoes. When leaves change color and fall settles in, you'll love this ensemble as your uniform for awkward transition weather. No doubt, a winning option when it comes to style tips for 30-year-old gentlemen.