For a casual outfit with a modern spin, you can wear a grey short sleeve shirt and brown chinos. Get a bit experimental on the shoe front and go for a pair of black leather chelsea boots. The ability to rock getups like this is one of the advantages of going into your 30s.
Grey Short Sleeve Shirt with Brown Chinos Smart Casual Chill Weather Outfits In Their 30s
This combo of a grey short sleeve shirt and brown chinos is put together and yet it's relaxed enough and ready for anything. If you want to effortlessly up the ante of this outfit with a pair of shoes, introduce black leather casual boots to the equation. This is a modern and age-appropriate pairing for a gentleman over 30.