A mattress protector is a protective cover designed to fit over a mattress, providing a barrier against spills, stains, and allergens. It helps to keep the mattress clean and can extend its lifespan by preventing damage from everyday use. Many mattress protectors are also waterproof, which is beneficial for households with children or pets. In addition to protecting the mattress, a mattress protector can enhance comfort. Some models are made with breathable materials that help regulate temperature, while others may add a layer of cushioning. Overall, a mattress protector is a practical investment for maintaining a healthy sleeping environment.