For something on the smart casual side, try teaming a dark brown cotton blazer with khaki chinos.
Dark Brown Cotton Blazer with Khaki Chinos Smart Casual Warm Weather Outfits
You'll be amazed at how easy it is for any guy to put together this casually sleek look. Just a dark brown cotton blazer and khaki chinos. Rounding off with brown leather loafers is a fail-safe way to bring an extra touch of style to your outfit.