This relaxed pairing of a burgundy turtleneck and chinos is a goofproof option when you need to look casual and cool in a flash. Round off this look with black canvas low top sneakers to jazz things up. During the colder months, when warmth is paramount, it can be easy to surrender to a less-than-stylish ensemble in the name of convenience. This ensemble, however, is a vivid example that you can actually stay cozy and remain stylish at the same time in the colder months. When it comes to casual style tips for guys over 30, this look looks great on almost any man.