The MedCline Reflux Relief System, includes the Advanced Positioning Wedge and Therapeutic Body Pillow, for 100% natural relief from nighttime acid reflux. Validated in five independent clinical trials, the System€™s components work together to comfortably create and maintain the ideal inclined left-side sleep position for optimal relief. MedCline has been proven to be the most effective treatment for heartburn, regurgitation, coughing, choking, nausea, and the many other distressing symptoms of acid reflux/GERD, as well as providing protection from prolonged acid exposure. Available in three sizes, please select the appropriate size based on user's height. For users who are between sizes, the smaller size is recommended.