I am 28 years old and have no medical injuries. The pillows are a good “preventative maintenance” choice even for those without current back, neck, or other bodily pains. I recently drove from Arizona to Alaska and used the Adjustable Lumbar Pillow behind my lower back against the seat. I noticed an immediate difference in my posture. I was more comfortable driving and was more alert as a result. I would recommend giving the Adjustable Lumbar Pillow a try if you are a commuter.
I have also experimented with the Adjustable Spine Alignment Pillow and have found that using it with minimal stuffing allows me to sleep undisturbed throughout the night.
I would recommend either or both of these pillows to anyone interested in a healthier posture, regardless if pain applies to you or not.