This duvet is filled with white Canadian Hutterite goose down. Hutterite down is the best quality down in the world. No other down reach such pureness. Its loft power is exceptional. Another asset of this down is its thermoregulation. During winter the comforter fluffs up and brings warmth and comfort, and in summer this comforter will remain at room-temperature. This Hutterite comforter has no equal. To choose Hutterite is to choose luxury’s height!