You're looking at the definitive proof that a beige long sleeve shirt and charcoal jeans look amazing when matched together in a casual getup. To give your outfit a dressier feel, add brown leather derby shoes to this outfit. Seeing as the weather is getting chillier with each day, this outfit is a viable choice for the transitional season. You can take inspiration from getups like this if you're 30 and you want to take a more serious approach to your personal style.
If you want take your off-duty fashion game to a new level, wear a beige long sleeve shirt and brown chinos. If you need to easily step up this outfit with a pair of shoes, complement your outfit with brown leather derby shoes. Seeing as fall is fast approaching, this look appears a good pick for the transitional season. As you mature into your 30s, you probably want to start dressing more maturely. If that's the case, ensembles like this are perfect as inspo.