This combination of a dark purple plaid wool blazer and navy chinos is a winning option when you need to look sharp in a flash. Finishing with a pair of dark brown leather oxford shoes is a surefire way to give an extra touch of style to this ensemble. As you can see, it's very easy to look awesome and stay comfy when cooler weather arrives, all thanks to looks like this. Well into your 30s, you probably want to start dressing with more refinement. In this case, ensembles like this are perfect as inspiration.