For a casually stylish look, pair a black quilted crew-neck t-shirt with mustard sweatpants — these two pieces fit perfectly well together. Why not complement your ensemble with a pair of casual boots for a sense of polish? Clearly, it's easier to work through a boiling hot summertime afternoon in a easy and breezy combo such as this one. If you're often not sure how to dress age-appropriately but also look stylish, this combo is a perfect example.