If you're planning for a sartorial situation where comfort is the priority, try pairing a navy crew-neck sweater with blue jeans. The whole getup comes together really well when you complement your look with a pair of dark brown suede desert boots. So as you can see, it's very easy to look dapper and stay comfortable come colder days, all thanks to combos like this one. And if we're talking style tips for teen guys, this outfit is ideal.