A blue long sleeve shirt and khaki chinos are indispensable menswear staples to have in your casual box. A pair of dark brown leather desert boots can integrate effortlessly within plenty of getups. Casual combos for gentlemen in their 30s aren't actually that hard, as you can see.
Why not pair a blue long sleeve shirt with khaki chinos? As well as super comfortable, these items look awesome married together. You could go down the casual route in the shoe department by finishing off with white and black athletic shoes. And if we're talking casual clothing for 30-year-old men, this ensemble is ideal.
This combo of a blue long sleeve shirt and khaki chinos delivers comfort and confidence and helps keep it low-key yet modern. Those who are curious how to wear modern casual looks in your 30s, you have your answer.