This combination of a grey turtleneck and light blue skinny jeans spells laid-back cool and relaxed menswear style. If you wish to instantly step up this look with one piece, complete this outfit with black leather casual boots. With springtime approaching, it's time to sport simple and stylish ensembles, just like this one. If you're in your 20s, pay attention to looks like this to add more seriousness to your style.