I bought this for my daughter who has a memory foam bed, but she started not to like it due to her not being able to get a good night's rest. So I figured instead of doing another memory foam that I would take my chances with a hybrid mattress. The description states firm, and that there is edge control but once she had gotten the bed she opened it and let it sit for 3 whole days. After allowing it to breathe and expand she put it on her bed to try it out she noticed that the edges completely went down when you sat on it and that it was not as firm as she would like. After speaking with customer service and explaining everything they were great they gave me a refund in which I asked for a store credit so that I could purchase another mattress.  Now she is waiting on the new mattress to be delivered.