Putting together a white crew-neck t-shirt with navy jeans is a wonderful idea for a casual look. Make a bit more effort now and add a pair of chelsea boots to this ensemble. This ensemble is most probably exactly what you've been looking for as a 30-something gent.
When the situation permits a casual getup, team a white crew-neck t-shirt with black jeans. For shoes, you could follow a classier route with a pair of chelsea boots. When it comes to style for 30-something Millennial guys, this combination looks great on almost anyone.
Wear a white crew-neck t-shirt with olive chinos if you wish to look cool and casual without much work. You could perhaps get a bit experimental in the footwear department and add chelsea boots to the equation. That's the style for a gentleman over 30 to portray you've got what it takes to succeed.
Extremely dapper, this casual combination of a white crew-neck t-shirt and dark brown chinos provides ample styling possibilities. Chelsea boots will bring a dose of elegance to an otherwise mostly casual look. You can take cues from combos like this if you've passed the big three-oh and you want to take a more serious approach to your style.
Team a white crew-neck t-shirt with white jeans to assemble an interesting and current casual ensemble. Feeling creative? Break up your ensemble by finishing off with chelsea boots. As you reach your 30s, you probably want to start dressing like a grown-up. That's when inspo like this comes in very handy.