SleepBetter Personal Comfort Ultimate Bed Pillow 100% cotton Adjustable, hypoallergenic bed pillow filled with millions of tiny polyester cluster fibers 3 adjustable memory foam inserts offer adjustable comfort, from ultra-firm to soft Slowly conforms to your head's curves by adjusting to your body weight and temperature Resilient memory foam ensures proper shoulder and spine alignment and keeps you comfortable 100-percent-cotton, 233-thread-count cover is machine-washable and dryer-safe