Ultima Custom Fit Mattress Pad by Innomax, Cal King Polyester Filled With A 10oz. Billowy Cloud Of Kodel Polyester For An Extra Layer Of Padding And Comfort. 50% Cotton/50% Polyester Top Offers Breathable Year Round Comfort. Fully Elasticized Sure-Grip Skirt For A Snug Fit. Non-Allergenic. Machine Washable & Dryable.