A harrington jacket and an orange gilet married together are the perfect combination for those dressers who prefer casual combinations. To give your overall outfit a more polished touch, why not complete this ensemble with black leather chelsea boots? As you can see, this combo is a really nice pick, especially for summer-to-fall weather, when the temps are dropping. As a 30-year-old man, you want to start dressing like a grown man. In this case, combos like this are a fail-safe option.