How to use: You can wear this blazer over a simple T - shirt for a casual look, or pair it with a dress shirt for a more formal work setting. For a night out, team it up with jeans and stylish shoes. When you're going for a day in the town, just throw it on over your favorite top. Attention: Always check the size chart carefully before buying to ensure the perfect fit. Since different suppliers have different sizing, don't rely on your usual size. Maintenance advice: It's best to follow the care instructions on the label. Usually, polyester - cotton blend blazers can be machine - washed on a gentle cycle. Use mild detergent and avoid using bleach. Hang it to dry to prevent shrinking or losing its shape. After drying, you can iron it on a low - heat setting if needed.