The Naturepedic Organic Cotton/PLA Pillow combines a 550 thread count 100% organic cotton dust mite barrier fabric with 100% PLA fiber filling for a luxurious and healthy sleep. PLA is a plant derived fiber made primarily from corn that offers excellent washability. Naturepedic is a GOTS (Global Organic Textile Standard) certified organic bedding manufacturer and has earned the trust of moms and doctors across the country. Naturepedic also meets the strictest GREENGUARD certification standards for eliminating chemical emissions. Please note this pillow is not meant to be washed.