2 HEIGHTS AND ARMREST DESIGNSWhen you are still troubled about not finding the right height pillow, our cervical pillows have 2 different heights on both sides for you to choose, so you can choose the right one which is more suitable for your sleeping posture. And there are specific grooves that allows your arms to go under for comfortable sleep.This orthopedic pillow is suitable for all kinds of sleeping posture,such as stomach ,back ,side sleeping.