Effortlessly blurring the line between sharp and relaxed casual, this combination of a beige crew-neck sweater and light blue jeans can easily become your go-to. You could perhaps get a little creative when it comes to footwear and tone down your getup by rounding off with a pair of brown leather work boots. Seeing as autumn is fast approaching, this ensemble seems a viable idea for the transitional season. Off-duty combinations for stylish 20-year-old guys aren't actually that hard, as you can see here.