If you're searching for a street style yet sharp ensemble, consider teaming a grey open cardigan with navy jeans. Channel your inner Idris Elba and complement your outfit with tan suede loafers. So as you can see, it's a kick-ass, not to mention spring-ready, combination to have in your transeasonal sartorial collection. And if we're talking casual clothing for 30-something men, this outfit looks nice on almost any man.