The Naturepedic Organic Cotton Waterproof Protector Pad is made with soft organic cotton flannel on top and organic cotton muslin on bottom with an ultra-thin waterproof barrier in the center for an absorptive and comfortable sleep environment. Naturepedic is a GOTS certified organic bedding manufacturer and has earned the trust of parents and doctors across the country. Naturepedic also meets the strictest GREENGUARD certification standards for eliminating chemical emissions. Soft organic cotton flannel on top and organic cotton muslin on bottom Organic Cotton is an ideal material that is natural and renewable. It provides an alternative to synthetic fibers and wool for those with allergenic concerns. Highly absorptive and extra soft Helps reduce uneven temperatures, sweating, and clamminess Corner elastic straps hold pad securely in place (latex free) Allergy-friendly design free from harmful chemicals Waterproof barrier is impenetrable to bed bugs, dust mites and other allergensNo vinyl/PVC, phthalates, PFCs or antibacterial/biocide treatments. Standard twin size (38? x 75?). Machine wash & dry Made in the U.S.A.