You get to set the
You get to set the exact firmness that you like for each side of the bed. From then on, it's always a great night's sleep. After a few months use and you have to travel, you really appreciate the quality of your bed at home after staying in a hotel. The mattress never needs to be flipped over and doesn't sag over time. We've had this style mattress for over 25 years without any complaints. We're on the second one in the master bedroom and just upgraded the one in the guest room.