Using this cardigan is a breeze. Just slip it on over your favorite tee or vest and pair it with casual pants. It's perfect for a casual day out or a relaxed gathering. When it comes to sizing, make sure to check the size chart provided. Measure your bust and compare it with the chart to find the best fit. Since it has medium elasticity, it will give you a bit of wiggle room but still maintain its shape. As for maintenance, it's recommended to follow the care instructions on the label. Usually, a gentle machine wash in cold water and air - drying will keep it looking its best. Avoid using harsh detergents or bleach as they can damage the fabric. And when you're not wearing it, fold it neatly and store it in a cool, dry place to prevent wrinkles and maintain its quality.