3-layer structure: Surface is 100% cotton, middle layer absorbent cotton and bottom layer made of EVA waterproof layer.Breathable, absorbent, and waterproof, can be used for wetting or sleeping sweat, or for rejuvenating milk. (Excellent Texture) Made with materials that are gentle for babies, so it is soft and comfortable to the touch. Convenient to Carry: The compact design allows it to be folded into a long wallet and is convenient to carry in your bag at all times. Includes drawstring: The product has a drawstring design that makes it very convenient to dry.