This colorful rainbow blazer is a great addition to your wardrobe. To put it on, simply open the single - breasted closure and slip your arms through the full - length sleeves. When it comes to sizing, always refer to the size chart as different suppliers may have variations. As for maintenance, it's best to follow the care instructions on the label. Usually, a gentle machine wash with like colors is fine. Avoid using harsh detergents that could damage the polyester and spandex blend. Hang it up to dry to keep its shape. And remember, this blazer is designed for men, so wear it with confidence and style!