100% Polyester INDULGE IN A WORLD OF DEEP SLEEP - Elevate your bedding with the Serta Memory Flex Soft Mattress Topper, which brings 2 inches of pillowtop fluffiness and an extra layer of protection to your bed. Our mattress topper delivers comfort night after night ODOR & STAIN PROTECTION - Our mattress cover features treatments to inhibit the growth of odors, keeping your bed fresh. Scotchgard’s wicking & stain release treatment helps keep you cool and clean, night after night comfort with day-to-day peace of mind NO SLIP DESIGN - Our mattress covers have a 15 inch pocket to ensure a secure fit on mattresses up to 18” deep. Effortlessly grips any mattress and prevents your mattress protector from shifting during your sleep EASY CARE MATTRESS TOPPER - Keeping your mattress pad clean has never been easier! Machine wash cold on a gentle cycle, tumble dry low. Spend less time worrying about maintenance and more time enjoying fresh and clean bedding SERTA - champion of comfort for all, Serta has pioneered sleep innovation for more than 90 years in more than 150 countries. From cooling sheets, soft yet supportive pillows and mattress accessories, Serta has everything you need to make a comfy bed