Protect your baby's new mattress and keep things hygienic with a certified organic waterproof pad. Made with two layers of a soft organic cotton jersey on top and bottom and an ultra-thin waterproof barrier in the center. Features DrySleep technology, which effectively blocks liquids from passing through while allowing some water vapor to escape. This helps reduce sweating and clamminess and provides a more comfortable sleep while offering complete waterproof protection. Eliminates questionable waterproofing materials like vinyl/PVC, phthalates, perfluorinated compounds (PFCs), and butane rubber.