We purchased a “TheraPur” ActiGel mattress costing £1699 in 2021 it started to sag on all sides and bobble on the surface of the mattress within a few months of purchasing. After an exhausting back & forth dreams sent out an independent engineer to inspect our mattress and he said that apparently we had the wrong height divan for the mattress and that the mattress has been sat upon at the end of the bed which has caused this fault…this information was not mentioned at the point of purchase at the dreams store in Colchester if we were aware of the lack of edge support that this mattress clearly does not provide we would not have spent so much money. I can’t stress enough to save your money and steer clear of this mattress as the staff clearly are only motivated to up sell this product and do not disclose its lack of reliability and short life span.