A navy denim jacket and beige cargo pants are a great go-to combination to have in your wardrobe. To give your overall outfit a more laid-back touch, why not complete your ensemble with a pair of beige canvas work boots? So if you're on the hunt for an ensemble that's on-trend but also feels entirely spring-friendly, look no further. This outfit suggests how to keep slaying in the casual style department as a 30-year-old gentleman.