We bought the Hyde & Sleep SK Ruby Very Firm Super King in Sept 2021 and it is Dec 2023 now. Only 15 months using and where my wife slept started sagging (She is ard 8x kg)and not supportive anymore. We reported it to Dreams and they sent a person to review, as usual just devil in details and the guy said the sagging didn't hit the criteria for a faulty or return. Glad that we get the SK size so we can still rotate it and probably sleep for another year and get rid of it. Just a horrible experience for paying £921 for a mattress and can probably only last for less than 3 years. NEVER BUY HYPE&SLEEP!