California King size Comforter Duvet Insert measures 96 inches x 102 inches. Crisp looking comforter features an elegant box stitching that prevent the fill from shifting. Extremely soft material with siliconized fiberfill alternative filling provides a comfy and cozy feel. The classic style of the down alternative comforter makes it suitable for all weather conditions to ensure a blissful sleep every night. Machine wash in the gentle cycle with cold water, sun-dry or tumble dry no heat.