didn't last

The mattress started out comfortable. But after about two years it started sagging on the edge, the side where I get on and off the bed. By year three the edge was totally smooshed down, with a big dip from the middle to that side. The only sleep-able surface is on the side next to the wall. I have never owned a mattress that did this. I mean the whole side is caved in. Maybe you could expect this kind of wear and tear on a ten year old mattress but not on one less than four years old. Trying to get warranty info is useless they just shove you back and forth between the manufacture and the place you by it. I gave up and just started looking for a new mattress.