You'll be surprised at how easy it is for any gentleman to throw together this classic and casual ensemble. Just a light violet blazer and blue chinos. Take this outfit in a more casual direction by wearing white canvas low top sneakers. Stick with this one if you're looking for a great summertime look. As a 30-year-old gentleman, you probably want to start dressing more professionally. If that's the case, outfits like this are a lifesaver.