My wife had some injuries from a couple of falls that caused her to have to sleep on her back rather than her sides, as was her habit. She needs elevation of her head and upper back to accomodate her injuries and sleep apnea. We purchased two of your slant wedge pillows to stack with a regular pillow atop, much like your photo. For the first time in nearly a year she is able to sleep in a regular bed rather than an uncomfortable recliner, and gets a great night's sleep! We couldn't be happier with our purchase!