Very noticeable sag, no longer comfortable
Purchased our king sized mattress in late 2024 for my wife and I. The first six months were great however the mattress has developed a clear sag on my side as well as a noticeable dip for my wife.
Even a 5cm thick latex mattress topper hasn’t helped.
The Sleep Republic website says that unless there is a visible dip of 3cm or more then no warranty applies. This of course cannot be seen given the plush upper side of the mattress fills in the sag where the springs which have clearly given way. We check each time we strip the mattress.
It’s impossible to tell with your eye but very real when you lay on it.
There is a very noticeable ‘ridge’ in the middle of the mattress like a speed bump. We rotate the mattress once a month (since the day we got it) and we encounter the same issue in both orientations. Pretty disappointed.








