I bought this for our platform bed. Both of us have had aches/pains/movement issues we thought were age related...come to find out it was mattress related. We replaced a traditional mattress with this new hybrid. Boy do we sleep sound now. Literally. The cats LOVE the mattress and will stretch out on it. When we first sat on it and you squish down into it you think--this is not going to work but it does. Your body has support every place. No more stiff neck in the morning. No more hurting hips. Delivered to our house. We opened it and let it fluff out for 3 days then put it on the bed. Best purchase.