What makes a good soft mattress?
A good quality soft mattress, as mentioned before, won't deteriorate or sag at a quick rate. If it does, then the quality of the spring tension or the springs themselves is probably low. However, with the Braemar from Relyon, you will not have this issue. They offer a 15-year guarantee with this mattress, which means you can likely 'rely on' this soft mattress to last for a while.