Jaybally Quilted Chair Loveseat Sofa Furniture Protector Waterproof Non Slip Slipcover (Memory Foam Bed Pillow, Blue) Both high and low loft cradles head and neck with therapeutic support, improving sleep quality Memory foam base is covered with an internal cover and zippered, cotton external cover. External cover is soft feel, machine washable Contour shape relieves neck, shoulder and back pain by allowing neck and shoulder muscles to fully relax, which is ideal for back and side sleepers High and low loft design meets personal support needs, prevents tossing and turning by keeping the head and neck in proper posture Standard size is 20.5*12.6*4 inch