In 2016 i purchased this south beach firm mattress from gardner white furniture and its been sinking since 2017, gardner white has been to my house three times in five years to no avail, they are stating nothing is wrong with this mattress and i cannot get another one, i'm a senior and cannot afford a new mattress this was a waste of my money i don't have i'm so disappointed, this mattress has a 10 year warrantynone