Parade your prowess in men's fashion by combining a brown crew-neck sweater and black jeans for a casual ensemble. To give your overall outfit a more polished spin, why not introduce black suede chelsea boots to the mix? So if you're looking for an awesome transition outfit, look no further. If you've passed the big 3-0, take cues from combos like this to add more seriousness to your wardrobe.
For a tested laid-back option, you can rely on this combo of a brown crew-neck sweater and black jeans. You could perhaps get a bit experimental with footwear and polish up this outfit by finishing off with burgundy leather oxford shoes. As you can imagine, this is a cool option come warmer days. This is a good-looking yet age-appropriate ensemble for 30-something Millennial gents.