This combination of a black crew-neck sweater and navy jeans is on the casual side yet it's also on-trend and truly dapper. On the fence about how to round off this outfit? Wear chelsea boots to dial up the classy factor. Can you see how very easy it is to look sharp and stay warm when colder weather comes, all thanks to combos like this? So if you need style ideas on how to dress at 60 and beyond, this combo is definitely worth saving for later.