An olive field jacket and a navy crew-neck t-shirt combined together are a match made in heaven for those who love casual looks. Complement your look with a pair of white print canvas low top sneakers for maximum style effect. As the weather warms up, it's time to get rid of those bulky winter layers and opt for an ensemble that's lighter, like this one here. Perfect if you're looking for some seriously inspiring casual style for 20-year-olds.