A navy double breasted blazer and dress pants are absolute must-haves if you're piecing together a dapper wardrobe that matches up to the highest sartorial standards. So so as you can see, it's a stylish, not to mention spring-appropriate, combo to keep in your transeasonal wardrobe. As you're going from your 20s to your 30s, you want to start dressing with more elegance. In this case, ensembles like this are a goofproof option.