A mattress topper is a layer of cushioning material placed on top of a mattress to enhance comfort and support. It can be made from various materials, including memory foam, latex, or down feathers, and is designed to improve sleep quality by providing additional softness or firmness. These toppers come in different thicknesses and densities, allowing users to customize their sleeping experience. They can also help extend the life of an existing mattress by reducing wear and tear. Many people use a mattress topper to alleviate pressure points and improve overall sleep posture.