A black long sleeve shirt and black chinos are absolute menswear staples that will integrate nicely within your current casual lineup. Switch up your getup with derby shoes. As you can see, it's super easy to look awesome and stay warm when chillier weather hits, thanks to this outfit. So if you need outfit inspo for dressing in your thirties, this combo is definitely worth saving for later.
For relaxed dressing with a clear fashion twist, consider teaming a black long sleeve shirt with white chinos. For something more on the dressier end to complete your outfit, add a pair of derby shoes to the equation. When you have one of those bleak autumn days, sometimes only a cool ensemble like this one can get you out the door in the morning. Certainly, an amazing example of grown-up fashion.