Erko all seasons micro full edge fitted waterproof and liquid proof mattress protector under mat erko all seasons water, liquid proof mattress protector under mat 100% microfiber ( soft top surface ) bottom surface 100% liquid proof, pu membrane coating which does not contain any harmful substances for your health information: we recommend checking your mattress size before ordering. the height of our product is 30cm, which is the standard bed height. if your bed height is greater than 30cm, it would be more appropriate to order one size larger mattress protector pad. our products are guaranteed not to shrink after washing if the washing instructions are followed. in terms of use, long-term inpatients, children or adults with wetting problems, those who have night sweating problems. ideal for pet owners. washing and usage instructions: it can be washed up to 60 degrees. in order to preserve its breathable structure, it should be rinsed with plenty of water after washing. drying can be done at low temperature. no ironing required, no ironing. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.