Ideal Product It has an elastic skirt for an ideal fit on mattresses up to 32 cm in height. It is the ideal option if bed has a lift-up base or a smooth upholstered base, since it covers the sides of the mattress that are exposed Our quilted protector is waterproof and breathable thanks to its Smartseal membrane, which allows air to pass but not liquids. It is thus the ideal protection for people who want a higher level of quality and breathability