This casual combo of a beige zip neck sweater and a crew-neck t-shirt is extremely easy to pull together without a second thought, helping you look seriously stylish and prepared for anything without spending a ton of time digging through your wardrobe. If you wish to easily dial down your getup with footwear, why not opt for a pair of grey athletic shoes? As you can see here, this look is a really savvy option, especially for awkward fall weather, when the temperature is getting lower. All in all, a perfect demonstration of off-duty fashion for 20-year-old gentlemen.