RV 3 I bought it for the support it says it will give the back of the neck for the good night sleep I'm supposed to get but when I got it I was shocked that it was a bit low from the curvature of the back of my neck. I tried fluffing it thinking it might improve but it was just low. It didn't improve my sleep as well. What I like about it is its firmness. It's not hard nor to soft. It's just enough. Is it a good buy? For me, NO.