Well, I must say that I am impressed. My wife has used these types of pillows before, but I hung on to the old style myself. Finally, it was time to replace her pillow. I ordered and got 2 pillows. for a fantastic price. So I decided to try one myself. Wow, this pillow is exactly what they say. It doesn't go flat at all, and remains comfortable. Once you get the shape the way you like, (mine is against the shoulder, under the neck), it remains that way. And it really doesn't go flat. Its does contour to your head a bit, but a regular pillow is flat, flat, flat, within a few days usually. This pillow has stayed the same way I like it, and supports my head just the way I like it. I have not woke up with a neck ache since getting this new pillow. And its been about a month now. I recommend this pillow to anyone who has trouble like me, with pillows going flat and neck aches. This is the fix.