Outer Layer: The Outer/Cover Layer is made from New lmproved Thermoplastic Polyurethane (TPU) Laminated Fabric, which is highly Water-Resistant, Breathable and Very Durable. it can be washed without any deformation and gives an ideal protection for your baby, the bed and linens from leakage.Inner Layer: The soft polyester fleece inner layer gently touches our baby’s skin. This layer can wich moisture away from babies skin and keep bottom dry.There is a pocket opening located in the inner layer to accommodate the microfiber inserts/liners, you can stuff the insert inside the pocket for maximum absorbency.All of these advanced designs are to make your baby feel easy and comfortable. That is what all parents are happy to see.Bright Color: Yellow, Red, Pink ,Purple, Blue, Green, Orange. (Science proves that bright color is good to baby on environmental cognition).Note:The white is insertSize:Dimensions of insert: 35 cm in length (13.77″)X 13.5 cm in width (5.31″) Wash temperature: under 30℃.(Less than 86℃)Babies weighing 3-13 kg (6.5-28 pounds)