Such must-haves as a denim jacket and charcoal jeans are the ideal way to infuse subtle dapperness into your day-to-day styling rotation. Feel uninspired with this outfit? Invite olive high top sneakers to spice things up. You're guaranteed to always look good even despite the sweltering heat if you have this look as a last-minute grab. This pairing illustrates that in your 30s your sartorial options are pretty much limitless.