Cooling mattress pad cover, it is slightly thicker, with a warm layer of ultra plush fluffy polyester Sherpa top on the back. Compared with the same style of mattress pad cover, the cool feeling and warmth have been significantly improved, the cold side is not easy to pilling, the warm side is not easy to itch, and the air permeability is excellent. California King: 72" x 84"-18” Machine Washable washed cold on a gentle setting and tumbled dry on low temperature mode. Do not bleach.