How does this compare to the craniocradle?

The Craniocradle is much more gentle. The Occipivot almost feels more like a strengthening tool, you can't be in it for as long. You kind of need to work up to longer times, it can make your sore. Its a great tool, but the Cradle has more of a Myofascial Release feel to it, in my opinion.

What type of material is this made of?

It's made of a hard rubber material. It does not give when you lay on it.

Is this made in China?

No. It is made by Magister Corporation, Chattanooga TN.

did you actually restore the natural cervical curve by routinely using this device?

It has helped, but I haven't had it long. My neck when set by the chiro keeps better between visits. If I miss more than 2 days of using the shaper I can tell a big difference ( bone moves out of place to press on spine). Start slow 2" then add time next week that works 👌 if you use it faster you're not see benefits and get sore and disheartened. It doesn't loose firmness so you can rock your head and get released from stress. Push right up to the shoulder when placing for best use and comfort!!! It helps well just after light stretching or yoga.