To wear this t - shirt, simply put it on like any other shirt. It's suitable for casual outings, hanging with friends, or even light workouts. When it comes to washing, turn it inside out and use a gentle cycle in cold water. Avoid using harsh detergents as they might fade the geometric pattern. After washing, let it air dry instead of using a dryer to keep the fabric in good shape. Always double - check the size chart before purchasing to ensure a perfect fit, as different suppliers may have slightly different sizing.