this item is advertised as 4 in. it is not. it is 2 in and it's memory foam, the bamboo top, if it's even bamboo, is very thin. it looks nothing like the picture that they advertise. so now we have false advertisement which is illegal. you cannot advertise one thing and sell something else because that is against the law in the United States. this seller either needs to be removed and not allowed to sell anything anymore or they need charges pressed against them. you are not giving customers what they ordered, what you advertise is a complete lie and misleading. once you open it and realize that the bamboo top is paper thin, the topper is actually just memory foam that is not cooling at all, and you're basically stuck with it because you can't return it once you opened it. I will be contacting Walmart and they will be returning my money. if they don't, I will be filing suit against them for false advertisement, misleading customers, and selling a different item than what's advertised