An eye mask, often referred to as a sleep mask, is a soft covering worn over the eyes to block out light. This can help create a dark environment conducive to sleep, making it easier for individuals to fall asleep and stay asleep. Eye masks are commonly used during travel, napping, or in bright environments. Many eye masks are made from materials like cotton or silk, providing comfort while resting. Some masks also include additional features, such as adjustable straps or cooling gel inserts, to enhance the sleeping experience. They are popular among those who struggle with insomnia or light sensitivity.