Rock an aquamarine double breasted blazer with dress pants for manly sophistication with a twist. Add a pair of tan leather derby shoes to the equation to easily up the fashion factor of this look. As you can see, it's super easy to look amazing and stay snug when cooler days are here, all thanks to looks like this one. So if you need fashion tips on how to dress as you step into your 30s, this getup is a great example.