This waterproof mattress protector set is designed to provide reliable protection while maintaining everyday comfort for your home. The soft and breathable fabric helps promote airflow for a cool and restful sleep, while the waterproof layer protects against spills, sweat, and accidents. The fitted sheet style with a deep pocket design ensures a secure fit on mattresses up to 16 inches without shifting. It also helps create a cleaner sleep environment by reducing exposure to dust mites, making it a practical choice for families with kids, pets, couples, or elderly sleepers. Each set includes a matching pillowcase or pillowcases depending on size. size: 1 fitted sheet+ 1 pillowcase. Other size: 1 fitted sheet+ 2 pillowcases.