Disposable Underpad: Main material:non-woven fabric,tissue paper,wood pulp,SAP(super absorbent polymer),PE film or PP film. Features specification: (1) Top sheet:soft and smooth non-woven fabric keeps skin dry and comfortable. (2) Absorbent layer:the wood pulp ,SAP(super absorbent polymer)or different plies tissue paper assures high absorbency. (3) Bottom sheet:water proof PE film or PP film is absolutely impermeable and prevents side-leakage.which guarantees hygiene and cleanness. (4) Packing:according to customers' requirements. (5) Dimensions:17"×24",24"×24",30"×30",24"×36",30"×36".