This laid-back pairing of a polo and navy chinos is very easy to pull together without a second thought, helping you look seriously stylish and ready for anything without spending a ton of time rummaging through your closet. For a modern on and off-duty mix, complement this outfit with a pair of black brogues. You're sure to always look stylish even despite the crazy heat if you have this ensemble as a last-minute grab. Take cues from combos like this if you want to add maturity to your 20-year-old's wardrobe.