Why not consider teaming a black and white cardigan with a short sleeve shirt? Both of these items are super functional and look amazing when combined together. Put a dressed-down spin on your ensemble by sporting black and white canvas low top sneakers. All in all, ideal for a gent in his twenties.
If you're looking to take your off-duty look to a new height, dress in a black and white cardigan and a short sleeve shirt. Finish off your outfit with a pair of black athletic shoes for a modern hi/low mix. Ideal if you're searching for some incredibly inspiring 20-something laid-back style.