I was a little hesitant purchasing a mattress online that is non refundable once opened and that I had never even sat on to test out. No worries!!! This mattress is amazing, especially for the price. We received the mattress 7 days after ordering online. It arrived rolled up like an area rug, deflated and in a cover (like what you put a sleeping bag in). It took about a half hour to reach 12 inches and a couple days to get to 14 inches. The memory foam mattress is already enclosed in a nice cover that can be removed for cleaning. It doesn't tell you that in the description. I noticed a lot of reviews call this mattress firm. I disagree. It's neither firm nor soft, just differently perfect. My husband and I are "soft" bed kind of people and hate firm mattresses. We noticed the memory foam "swallows" you appropriately leaving no pressure points. So for us, that means it's soft. Now it doesn't bounce back when you jump on it, so in that way I guess you would call it firm. I'm a side, belly and back sleeper and the bed is perfectly comfortable in all positions. My husband likes to sleep on his side with his arm and leg on me which got painfully heavy on our old mattress. With the new mattress, I just sink a little more in and I don't feel the weight of his body on top of mine. We both wake up without aches and have a full nights sleep. My only regret is that I wished we would have bought this mattress sooner. We looked into the other top of the line name brands and just couldn't see the point in spending thousands of dollars on a bed. This was our first memory foam bed and we will hopefully never have another spring mattress ever again. I now understand why people pay thousands of dollars for a memory foam mattress, because they are worth it! Thank you Overstock for saving us so much money!! Please don't change your ways! As for the bad odor other's had mentioned, neither of us noticed any bad odors coming from the mattress. I strongly recommend this mattress, you won't be disappointed!