Liquid proof mattress protector fitted mattress top surface: 100% pes / bottom surface: 100% pu membrane (liquid proof and breathable) side base height 30 cm. (it is a tulle fabric. there is no pu lamination.) does not shrink, should be taken by choosing the exact size. guaranteed return and exchange. breathable and liquid proof pu membrane does not give any chance to bacteria and dust mites. it prevents sweating thanks to its moisture and vapor permeability. it is useful for long-term inpatients and those with urinary problems. natural yarns provide you with an ideal environment for a comfortable and healthy sleep. oeko- it has tex 100 standard class 1 certificate. Improved version for clearer understanding and better search visibility. Suitable for users seeking detailed and reliable product information.