This combo of a grey trenchcoat and black chinos is the perfect base for a countless number of getups. Complement this ensemble with a pair of white athletic shoes to make a sober look feel suddenly fun and fresh. As the weather warms up, it's time to shed those bulky winter gear and choose something lighter, like this ensemble here. This pairing demonstrates that moving from your 20s to your 30s is no reason to shed casual style altogether.