This relaxed combination of a light blue long sleeve shirt and grey sweatpants is a goofproof option when you need to look sharp but have no extra time to dress up. If you don't know how to round off, a pair of white canvas low top sneakers is a smart choice. A vivid example of functional style, this ensemble must be in your front hall closet this winter season. Perfect if you're searching for some amazingly inspiring casual style for gentlemen in their thirties.