This casual street style combo of a dark brown horizontal striped crew-neck t-shirt and black jeans is super easy to put together in no time flat, helping you look seriously stylish and prepared for anything without spending too much time going through your wardrobe. A pair of black suede loafers immediately revs up the fashion factor of any outfit. In your 30s, you want to start dressing like a grown man. That's when looks like this become a great source of inspo.