West Elm describes as: Fall for flax. Our European Linen Duvet Cover is crafted from fine European flax, which is washed for a luxe, lived-in look. Prized for its breathability and softness, linen keeps you cool in the summer and warm in the winter, making it a dreamy choice for the master bedroom. Due to the wash process, color will be unique to each piece. Linen woven from Belgian flax, constructed in China.