As you can see here, looking on-trend doesn't require that much effort. Just go for a navy blazer and a white long sleeve shirt and be sure you'll look awesome. Why not complement this getup with white canvas low top sneakers for an easy-going vibe? An amazing example of comfortable fashion, this look must be in your sartorial collection when cold weather hits. So if you're hunting for a nice yet age-appropriate combination for a man in his 20s, this one fits the task well.