This getup with a mock-neck sweater and a long sleeve shirt isn't super hard to pull together and easy to change. A pair of beige leather low top sneakers effortlessly turns up the street cred of this look. Undoubtedly, it's easier to work through a hot summer afternoon in a easy and breezy getup like this one. If you're approaching your late 20s, take inspiration from outfits like this to add more seriousness to your personal style.