A blue turtleneck and a blue vertical striped suit paired together are a nice match. Take your outfit in a smarter direction by finishing off with navy leather tassel loafers. Take cues from looks like this if you want to add seriousness to your 20-year-old's style.
Blue Turtleneck with Navy Leather Tassel Loafers Outfits In Their 20s
This polished combo of a blue turtleneck and navy dress pants is a favored choice among the sartorially savvy chaps. Add navy leather tassel loafers to the mix et voila, the look is complete. So take notes and you'll be the sharpest dressed guy in the room.