How to wear: You can wear this blazer over a simple T - shirt and jeans for a casual look, or pair it with a dress shirt and slacks for a more formal occasion. It can also be layered with a sweater in colder weather. Note: Always check the size chart before purchasing to ensure a proper fit. Since it's made of polyester, it may not breathe as well as natural fabrics in hot weather. Maintenance: You can machine - wash this blazer on a gentle cycle with cold water. Use a mild detergent. Avoid using bleach. Hang it to dry to prevent shrinking. If needed, you can iron it on a low - heat setting.