A charcoal plaid blazer and white ripped jeans worn together are the perfect getup for those who love casual getups. For a more refined feel, why not complete this look with black leather derby shoes? So if you're on the lookout for an outfit that's seriously stylish but also feels totally spring-appropriate, this just might be it. This pairing should erase any doubts you had about wearing casual clothes as a guy in his 30s.