The PortaBaby play yard mattress pad offers a soft and comfortable sleeping surface for your little one. It"s completely waterproof to protect against moisture, leaks and spills. Its polyester fill provides soft cushioned comfort for your child. At the same time, it"s breathable and allows proper air flow. This waterproof mattress pad has a woven sateen cotton top with a quilted design. Its back is attached with waterproof vinyl. This baby bed mattress pad perfectly fits the PortaBaby Play Yard Sheet (sold separately). It can easily machine washed.