100% French linen, breathable and soft. Stonewashed for extra softness and lived-in look. Duvet cover features button closure and inside corner ties to keep the insert in place. Oeko Tex certified product, no harmful substances are used in production. Machine washable, tumble dry low. Iron only when needed. Queen size duvet cover 90x92" with 2 standard pillow shams 20x26". King size duvet cover 104x92", with 2 king pillow shams 20x36".