My first physical therapist had recommended rolling up towels, and although that sounds good enough it did not work well overnight. This product is easy to use with a feather pillow and stays in place well overnight (even though fit is not perfect with any of the pillow cases I have since it affects the fixed dimension). I initially found I was sleeping with less shifting, then had a few days where I slept better without this; however, I am back to using this more often than not and would recommend it to anyone with cervical issues (under guidance from their own medical professionals, of course).
Rating: [4 of 5 Stars!]