This off-duty combination of a blazer and a long sleeve t-shirt is super easy to throw together without a second thought, helping you look seriously stylish and ready for anything without spending a ton of time digging through your wardrobe. Want to play it down in the footwear department? Introduce white canvas low top sneakers to the equation for the day. This one is a great idea when it comes to a knockout outfit that transitions easily into fall. Think older gents can't pull off modern casual looks? This combination should prove you otherwise.