A sleep mask is a soft, padded accessory worn over the eyes to block out light, promoting better sleep. It is often made from materials like cotton or silk and can come in various shapes and sizes. Many people use sleep masks to create a dark environment, which can help improve the quality of their sleep, especially in bright settings. In addition to aiding sleep, sleep masks can also be beneficial for relaxation during travel or meditation. Some masks are designed with added features, such as cooling gel or aromatherapy, to enhance comfort and provide a soothing experience while resting.