For an ensemble that's super straightforward but can be worn in a myriad of different ways, marry a navy blazer with a white polo. Complement this getup with tan suede desert boots and off you go looking boss. During winter, when practicality is prized, it can be easy to surrender to a less-than-stylish ensemble. But this ensemble is a good illustration that you can actually stay warm and remain equally stylish during winter. Now that's how you do semi-casual in your sixties.