A plastic toothbrush holder case is a container designed to store and protect toothbrushes from dirt, dust, and other contaminants. It is typically made of durable plastic material that is easy to clean, lightweight, and portable. The holder case usually has a narrow opening at the top that allows for easy insertion and removal of toothbrushes. It may also have small holes or slots that provide ventilation and allow for quick drying of the toothbrushes. Some cases may have additional compartments or pockets to hold other dental hygiene products such as floss, mouthwash, or toothpaste. The plastic toothbrush holder case comes in various shapes, sizes, and colors to suit different tastes and preferences.