We bought one at Wal-Mart. I am not sure of the brand. I honestly could have stood to do more research. Lol. I skimmed Amazon and pricing seemed comparable to what we bought. It is 3 inches thick and quite soft. It was still expanding when I left the house So I haven't gotten the chance to test it out yet.
I will say... That our memory foam mattress has a cooling gel layer and sadly once we put the waterproof mattress cover on (which is what they suggest) basically all effects were lost. Before we bought the cover we slept on it a few nights without and you could definitely feel the difference. So if you plan on putting any sort of mattress pad on it it might not actually be worth it.
I wouldn't be putting a mattress pad over it. The cooling gel topper is almost twice the price as the regular one. If it actually works then it's worth the money to me. I just don't want to spend twice as much if they're all the same. I guess I won't know the difference either way!
Like I said I can definitely tell that there was a cooling effect on our regular mattress. If I wasn't paranoid I might go without the waterproof mattress pad. But it's also not like we bought this mattress specifically for the cooling layer. It just happened to also have that.
I think if you can swing the extra I would go for the cooling one!
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