Using 100% soft organic cotton, the fabric is incredibly breathable and moisture-wicking, keeping you dry and cool during the whole night. Out organic cotton is ethically grown, ensuring and keeping its natural feeling. There may be some small dark spots through the cover, they are crushed cotton exocarp, which is natural and safe. The duvet is filled with 95% white feather fiber and 5% white goose down, with an extra step to remove solid feather quils, providing plushness and softness. Designed with sewn-through construction to ensure uniform distribution of the duvet filling, and avoid shifting or bunching. The comforter can be anchored to a duvet cover by its four convenient corner tabs.