Why not try teaming a grey denim shirt with white chinos? These items are very comfortable and look awesome together. Rounding off with a pair of black athletic shoes is a surefire way to introduce a more casual vibe to your look. Come super hot sunny days you want to feel comfy and seriously stylish –– this outfit is just what you need. Wondering how to nail casual style well into your 30s? This pairing is a wonderful example.