This appears to be good quality foam despite having very little information about it. A linked datasheet would be nice to have. I will say that this is almost twice as expensive as some competitors 4lb memory foam, but I can't say whether the "gel" component of this memory foam makes it worth it. My main reason for purchase is that they're one of the few places that are willing to sell this in 1" thick slabs. Most places are 2"+
Either way, I use a layer of this in my bed and it seems to work well.