A blue turtleneck and a long sleeve shirt are indispensable menswear staples if you're planning a casual wardrobe that holds to the highest style standards. Finishing off with white canvas low top sneakers is an easy way to bring a bit more edginess to this outfit. With spring in the air, it's time to put on simple and on-trend combos, just like this one. When it comes to casual style tips for guys in their 20s, this getup looks good on almost any man.