A blue raincoat and teal jeans are absolute menswear essentials that will integrate wonderfully within your day-to-day casual fashion mix. The whole look comes together if you add a pair of slip-on sneakers to this look. When it's one of those gloomy fall days, sometimes only a kick-ass ensemble like this one can cheer it up. This pairing demonstrates how to keep succeeding in the casual fashion department as a 30-something man.