The quality and comfort with this product are fantastic. The cover is also really nice. I’m not giving it a perfect score because the 5.5” is just too thick, in my opinion. I used it for several months. It is like sleeping on a cloud.  The downside is that the extra 5.5” of thickness makes it hard for the sheets to stay on, and you tend to sink in toward the middle of the bed, like a taco. I kinda had to roll myself out of bed. I eventually gave this away and ordered the exact same product in the 2” height, which has proven to be a perfect choice for me. I already have a deep mattress, so I order extra-deep fitted sheets and they stay on just fine with the extra 2” of gel mattress on top.