A shame I can't do minus stars! Purchased: Aloft Mattress, super king, 6+ months ago. This will be a long one… Despite the '101 night trial' the issues we are experiencing didn't manifest until a few months in. The mattress is a memory foam type which seems to be the memory of a goldfish! We have experienced collapsing/compression of the foam in the main sleep areas which leaves a noticeable ridge in the centre. The mattress does not spring back in an acceptable period and you find yourself in a ‘rut’ throughout the night. Next sent out an 'independent expert' to assess the mattress who arrived maybe 8 hours after the mattress was last used and did his checks and measurements. His report was sent to Next and I was copied in on their comms (although I know for sure I didn't get a copy of the full report as he showed me his version on his tablet). Their response was that his assessment showed no manufacturing defects and they would take no further action. Although the independent expert highlighted some issues with the bedframe size mis-matched to the mattress (fair enough, but that doesn’t impact on the specific issues we are experiencing) his comments about “wear and tear consistent with it age and use” is laughable… it’s only 6 months old. When we purchased the mattress we had an existing bed base which we mentioned to the staff who didn't suggest it would be an issue. The independent expert suggested the centre support bar was the cause of the ridge - this is a standard bed frame type, and we were not advised to use a divan/other type of base for this mattress by in-store staff or other communications (product literature, etc). Now, perhaps my understanding of a memory foam mattress is incorrect, and my previous memory foam mattress was actually much better quality?? But this mattress is proving for an unsettled night’s sleep. I have provided a comprehensive response to Next regarding the experts assessment and all I get back is the scripted ‘we have had an independent review which suggests no manufacturing fault and we will not be taking any further action’ - not what I’d call a good customer service in recognising and addressing my concerns. I am having rather impersonal and abrupt telephone and email conversations with various members of the customer services team - one accusing me of not emailing them ‘correctly’ (“you did not write ‘FAO HOME TEAM’ in the email and we didn’t get it” despite me quoting the case ref. and never having been told or read that I need to specify that bit!) which is rather stressful. I am now 5 months pregnant and with the poor sleep quality and stress of not being able to get a sensible/personal response to my queries it is starting to get upsetting. That paired with the initial cost of the mattress and the potential loss of that money and of having to pay out again elsewhere for a replacement is very overwhelming. I would advise staying away from this mattress completely, and Bob-forbid you have to deal with their customer services team.