TWO HEIGHTS: 4.1/4.9inch (PLEASE NOTE: Before purchasing, please compare with the height of the pillows you usually use and confirm that the height is suitable for you.)THIS PILLOW IS MODERATELY SOFT AND FIRM. THE FOLLOWING PEOPLE PLEASE PURCHASE WITH CAUTION1. If you usually sleep with pillows that are too soft or too hard2. If you are hurting your neck or shoulder now5 SECONDS SLOW REBOUND MEMORY FOAMMemory foam is an innovative material designed to shape itself to the contours of your head so that the pressure could be released, which brings less tossing and turning throughout the night.UNIQUE DESIGNThe cervical neck pillow can support your neck in the neutral aligned position and lifts your head to the proper height while you sleep on your back or side. It is possible for you to experience some discomfort during the FIRST TWO WEEKS while your body is trying to adjust to the correct position. Please be patient and give yourself an adaptation cycle.Neck ContourThe cavity in the middle helps to cradle the head for optimal support and make you breathe better and smoothlyCenter ContourFor back sleepers follows the curve of the neck and spine (upper back) and prevents herniated or bulging disc in neck efficiently.GREAT GIFT & SERVICEElviros memory foam cervical neck pillow is packed with a great paper gift box. It's an ideal gift for your parents, friends, and relatives as for birthday gifts and holiday gifts. As it is vacuum packed, so when you release the air out of the package, give it several minutes to an hour to slow rebound to its normal shape.Note:When removing and washing the pillowcase of our pillow, we need to unfasten the middle button first and then unzip it.