100% Washed cotton,the natural cotton,a raw material handled by special process.Research proves you get a better night's sleep with cotton duvet cover sets than those made from synthetic fibers because cotton naturally allows your skin to breathe and doesn¡¯t trap heat under the covers.Machine washable and Never fade,Hypoallergenic,luster more gentle,very soft and wrinkles in a slight degree reflect a sense of old materials and vintage modern look and cozy comfortable feel.SUSYBAO