ID holders are protective cases designed to securely display identification cards, such as driver's licenses, employee badges, or student IDs. They are typically made from durable materials like plastic or vinyl and come in various styles, including vertical and horizontal orientations. ID holders often feature a slot or clip for easy attachment to clothing or bags. These holders help prevent damage to IDs from wear and tear, moisture, or dirt. Many ID holders also include additional features, such as a lanyard or retractable badge reel, making them convenient for everyday use in workplaces, schools, or events.