its so so

while sleeping on this model, felt pressure on my back and hip. I thought it was the springy cools, come to find out it was a rippled layer of foam under the mattress pad. maybe the firm plush has to be broken in. the first 3 nights it was ok, but the last 3 weeks I wake up with lower back and hip and shoulder pain. but I notice each night just recently its not as hard as when I first received it. and I am not a large person.