This combo of a white crew-neck sweater and brown chinos is on the off-duty side yet it's also sharp and extra dapper. Complete this getup with brown leather work boots to keep the ensemble fresh. Can you see how extremely easy it is to look on-trend and stay toasty when cooler weather comes, all thanks to getups like this? When it comes to casual outfit ideas for young gentlemen, this getup looks nice on almost anyone.