Brand New iSleepFit Sleep Posture Belt/Positioner Belt. It sells on Amazon for $54.95 - Asking $23.00.
The iSleepFit Adult Sleep Positioner Belt Trains You to Sleep in Your Optimal Position to Ease Sleep Positional-Related Snoring, Pain, GERD, and Wrinkles.
See link to Amazon for more info. where this was purchased: