To use this sweatshirt, simply put it on and enjoy the warmth and comfort. You can wear it casually at home or go out with it. When it comes to washing, use cold water and a gentle cycle to protect the fabric and the print. Avoid using bleach as it may damage the colors. After washing, tumble dry on low heat or hang it to dry. This will help maintain the shape and quality of the sweatshirt over time. Also, don't iron directly on the print to prevent any damage.