To wear this blazer, simply put it on over your favorite shirt or t - shirt. You can pair it with jeans for a casual look or with dress pants for a more semi - formal occasion. When it comes to washing, check the care label on the blazer. Usually, polyester blazers can be machine - washed on a gentle cycle with cold water. Use a mild detergent to avoid damaging the fabric. Hang it to dry to prevent shrinking or losing its shape. Before storing, make sure it's clean and dry. You can hang it in your closet with a proper hanger to keep its shape intact. Also, always double - check the size chart before purchasing to ensure the best fit for you.