To put together an off-duty outfit with a modern take, reach for a navy blazer and white jeans. Add a pair of espadrilles to the mix to immediately turn up the appeal of this ensemble. If you're trying to figure out a summer-friendly look, here is a great one. As you reach your 30s, you want to start dressing more like a mature gentleman. In this case, ensembles like this become a great source of inspiration.