BackJoy, a trusty supplier or ours and inventors of one of the world's most innovative posture-correcting seat cushions, took on the task of making a better pillow. Their basic premise? In order to achieve a truly restful night's sleep, a good, proper sleeping posture was top priority. Of course, they knew the pillow needed to be supportive, yet soft, while allowing air flow to manage temperature. But they insisted it be versatile, to account for a wide variety of preferred sleeping positions, and inevitable nighttime movement patterns. The result is this patented, proprietary combination of reinvented hypoallergenic down fill, for superior loft and softness, and strategic layers of premium Cool Comfort Memory Foam, for optimal support of the neck and spine - all while promoting air flow. Your head floats in perfect sleeping posture, helping maintain healthy neck and back alignment, whether you sleep on your side, your back, or both! Includes machine washable soft plush-top cover.