A navy and green plaid long sleeve shirt and navy sweatpants are a wonderful combo to have in your current styling rotation. If you need to immediately dial down this look with one single item, why not add grey athletic shoes to the equation? This combination is a viable pick when it comes to a kick-ass getup that will take you from summer to fall. Wondering how to nail casual style as you move through your 20s? This combination is the perfect answer.