I purchased the gentle midsized version of this pillow after reading reviews, hoping it would help my neck and related headaches. The first few nights, the pillow was great, but within a week of use, the stuffing material would move out to the sides instead of staying under my neck during the night. I would wake up without much support under my neck, which made my neck worse. For several nights I tried getting the material back to the neck support area, but woke up with the same results in the morning. I've stopped using the pillow at this point. Great concept, just needs a type of stuffing that won't move around.