The best thing about the mattress is the 100 day trial and ability to return it if not satisfied.
The mattress itself was relatively easy to unpack and move, and my sleep was great for about 2 weeks. Then the whole mattress started to sag and "deflate" and by the end of the 3rd week I was having back pain, hating the mattress, and dying to get rid of it. I gave it a few days, thinking it may just be the summer heat or a stressful work week, but it didn't get better. The bed continued to get more squishy and less supportive. I ultimately returned it after a month, and am so glad I did!