When the situation permits laid-back style, you can easily rock a blue denim jacket and a v-neck sweater. If you want people to see maturity in you, an ensemble like this is a safe bet.
Blue Denim Jacket with V-neck Sweater Smart Casual Outfits For Men In Their 30s
A blue denim jacket and a v-neck sweater will infuse extra style into your daily casual repertoire. Add a more laid-back vibe to by finishing with a pair of white leather low top sneakers. So as you can see this combination is something you can totally wear as a 30-something guy.