I love this bed. The medium-firm is perfect, not too soft but not too hard. I have back problems, but this bed makes it possible for me to be able to sleep in any position comfortably. I’ve been sleeping on this bed for a week and I’ve already found that I’m not waking up with back pain anymore! This bed disperses my weight evenly. I wake up feeling refreshed. Unlike other vacuum sealed beds, there was virtually no smell when I unwrapped the mattress. It expanded to the full 8” and any indents in the mattress from being packed up came right out within a day. It took approximately 1.5 days to fully expand. I’m very impressed, especially for the price! I wasn’t able to get rid of my last mattress yet, so I placed this one on top in the meantime and it’s still extremely comfortable. I’m very happy with this product