Underpad has five layers to absorb the liquid:

First layer is soft non-woven fabric,keeps skin dry and comfortable

Second layer is tissue paper

Third layer is fluff pulp mixed with SAP(super absorbent polymer), absorb the liquid very fast and quickly

Fourth layer is Tissue paper

Fifth layer is PE film, can prevent the leakage and side-leakage, and keep the bed or floor dry and clean, which guarantees hygiene and cleanness 

Company Certification