With an organic cotton surface, waterproof backing and machine washable convenience, this breathable pad passes suffocation tests with flying colors while making crib changes easy. Non-crinkly, whisper quiet, non-sweaty, and made from soft organic cotton jersey.Protect your baby's new mattress and keep things hygienic with a certified organic waterproof pad. Made with two layers of 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.