If you feel more confident in comfortable clothes, you'll love this casual pairing of a grey crew-neck sweater and khaki chinos. Rounding off with tan low top sneakers is the simplest way to introduce a more relaxed touch to this ensemble. Seeing as autumn is taking over, this ensemble is a good option for the season. Those who wonder how to wear modern off-duty looks as you go into your 30s, this outfit should answer your question.