This mattress replaced a mid level Sealy Posturepedic  Chaleigh, a plush interspring mattress I purchased 2.5 years ago. My
Wife and I were both suffering aches and pains. Upon ordering, I was worried this “medium” was gonna be to firm or to soft. After opening it expanded to size in minutes. The smell was strong at first but subsided quickly.  I opened a window and put a fan on it to help air it out. The mattress is perfect. It sleeps great. The lower
Layers are firm while the top cradles nicely. I’m a hot sleeper and it doesn’t retain heat like some memory foam mattresses. I recommend this mattress. Pleased with this purchase.