If you're on a mission for a casual and at the same time dapper ensemble, wear a puffer jacket and grey sweatpants. Send an otherwise mostly classic getup down a more laid-back path by finishing off with a pair of grey athletic shoes. All in all, a good example of casual style for 20-something guys.
A puffer jacket and grey sweatpants are great menswear essentials that will integrate really well within your casual routine. For something more on the daring side to round off this look, add a pair of grey athletic shoes to your outfit. Perfect if you're looking for some amazingly inspiring relaxed style for 20-somethings.