Using this vest is super easy. Just slip it on over your T - shirt or tank top for a casual and stylish look. It's suitable for various occasions, whether you're going out for a walk or meeting friends. When it comes to size selection, always check the size chart as different suppliers may have different sizing. Don't rely on your usual size blindly. As for maintenance, this polyester vest can be machine - washed on a gentle cycle. Use a mild detergent to keep its color and shape. Avoid using bleach as it may damage the fabric. After washing, hang it to dry in a well - ventilated area. Don't wring it out forcefully to prevent wrinkles. With proper care, this vest will stay in good condition for a long time.