Worst experience! I got mattress delivered on 11-Jan-2019, and started using since then. After sleeping single night, I felt worse back pain. Next day, my son (5 years old) couldn't sleep and woke up at midnight with his back pain. I gave it more days to get used to with it, but nothing changed even after 20 days. After emailing customer care, they responded within a minute saying they do not allow refund/exchange once the mattress is open and used and sent me the T&C clause number 9.3 (which I did not receive in email when I paid for it)....gggrrrr! I paid more than £300 but now got caught in their faulty products..stay away! (DONT FALL IN THEIR LUCRATIVE SALES OR OFFERS)