If you want take your casual look to a new height, dress in a polo and charcoal chinos. Add a pair of white plimsolls to the mix and the whole ensemble will come together wonderfully. Your thirties is the decade to start dressing with more sophistication. And it's easy with visual inspiration like this.
You'll be surprised at how super easy it is for any gentleman to get dressed like this. Just a polo worn with navy dress pants. For something more on the casually cool end to complement this ensemble, complete your ensemble with a pair of white plimsolls. If you're not sure how to dress appropriately for your age while looking fashionable, this pairing is a great example.