Horizontal blinds are window coverings made of long, flat slats that can be adjusted to control light and privacy. These slats are typically made from materials like aluminum, wood, or vinyl, and they can be tilted to allow varying amounts of sunlight into a room. The design of horizontal blinds allows for easy operation, often using a pull cord or a wand. They are popular in homes and offices due to their versatility and ability to fit various window sizes. Additionally, horizontal blinds come in a range of colors and styles, making them suitable for different interior designs.