This pillow cover provides a quick and easy way to keep your CPAPmax Pillow fresh and clean. This high-quality pillow cover is designed to custom fit the curves and shape of your CPAPmax pillow. It is uniquely designed to open on the upper end of the pillow to allow easy access to the inner cover CPAP hose tether. It's made from a premium 300 thread count 100% cotton fabric - soft and breathable to enhance the cool properties of your pillow