This is truly a great little mattress!  I only gave it 4 stars because it was a little shorter than I expected and didnt fill out my whole bed like I like it. However with the comforter and such on it, it helped. Its medium to firm and it was really easy to unpack. Light weight enough for me to handle it myself (I only ordered a twin size though) and I really like the quality of the mattress!  The gel has a nice zipper cover which is helpful a d it filled out its shape almost immediately!  The smell at first is quite strong (chemical type gel smell) but this has already gone mostly away after having it for a few days. Good mattress. I am pleased and would definitely reccommend!