Trust the traditional name in sleep with Simmons with advanced sleep technology bed pillow. The core of the pillow is filled with adjustable memory foam clusters so you can get the exact feel to match your body. The outer chamber features a soft down alternative microfiber polyester for added softness. The final layer of protection comes from the zippered and fully removable shell made of 300 thread count, 100% cotton material. When you want to clean this pillow, simply remove the outer cover with the zipper and throw it in the wash like your favorite t-shirt. Made with the global sustainability you care about; this item is certified OEKO-TEX Standard 100 with certification number 2018OK0917 as certified by AITEX.