Memory Foam reacts to the temperature of the body and forms to the head and neck, giving proper support while maintaining softness. High density, slow recovery, temperature sensitive, molds and contours to the neck and head for maximum comfort. Pressure relieving, visco-elastic memory foam provides excellent support while reducing pressure point sensitivity. Made with a muslin foam barrier cloth and removable, machine washable, velour cover with zipper for easy cleaning. Extremely versatile memory foam pillow can be used behind the head, between the knees or against the back for both comfort and support.Â 12" x 19" x 4".