Why not opt for a tan blazer and white skinny jeans? Both items are very comfortable and will look awesome matched together. Double monks are guaranteed to infuse an extra touch of sophistication into this outfit. This ensemble isn't a hard one to nail and it's summer-appropriate, which is more important when it's roasting hot outside. A reliable option for young gentlemen after a more professional image.
Go for a pared down but at the same time laid-back and cool choice by opting for a light blue long sleeve shirt and white skinny jeans. For something more on the classier end to round off your look, complement this outfit with double monks. If you're thinking of a summer-appropriate outfit, this here is your inspiration. Rest assured this ensemble is something you can totally wear as a gentleman in his 30s.