Bought this topper a year ago from Costco U.K. and it’s terrible. The picture advertising it shows it deeper than it actually is. I have persevered with it as I have FMS and needed some comfort even though I have a gel mattress. I’ve tried to put a review on the Costco site but can’t find where to add it so I’m putting it on your site. I’m extremely disappointed that it’s bad. Topper after laying on it went down to nothing, no support whatsoever, much thinner that I expected and a waste of £149. The blue foam doesn’t stop me from sweating, in fact it’s worse than the last topper I had which had a cool cover like yours. This memory foam mattress should be twice as thick to make a difference. From one totally upset customer.