All of our decorative covers are made from 100% USDA and Global Organic Textile Standard (GOTS) certified natural fibers. The fabrics are dyed in 100% organic vegetable dyes that are certified by GOTS. No matter what fabric you choose, feel confident that you are buying a product that is 100% organic and certified by two of the most stringent third parties. All of our covers are washer and dryer safe. ( Wash with cold water and tumble dry low) Below are the fiber composition and weights of each fabric type.