Absolutely love it! Unlike most people that have written reviews on this, I bought it to be my bed, not for a guest room or bunk-bed, etc.. I was looking for something that didn't take up much room (currently renting one room in a house) and could be rolled up or stood up during the day to provide more space. I needed it firm but not stiff (60+ male, 200 lbs with a few chronic med issues), since it would be laying on a piece of carpet on a wood floor (no frame). It has more than met my expectations so far. I can't wait to go back to bed later :-).It came vacuum-sealed and rolled up, encased in a thicker (4-5 mil?), "tube" of plastic inside a good-quality, thick cardboard box. Carefully cut the thicker plastic (too tight to slip off) tube off (use scissors if you want to be sure not to slip and cut into the mattress) with a box cutter and cut off the plastic "bag". No big release of chemical vapors like others I've dealt with in the past. I was very surprised how low (almost non-existent) the odor was. Had to get really close to the mattress to notice it. It expanded pretty fast to the full 5" and I let it lay on the living room floor overnight and into the next day to air out (instructions say it can take up to 48 hours to fully expand but mine took less than an hour).Next day I replaced my bed-roll (2" mattress topper with a couple pads for easy roll-up and stashing out of the way) with this mattress and tested it out. Super comfortable for me. It is firm (some would say very firm) but for me it has just enough give and provides great support). For a lighter person, it may be too firm depending on your taste. It's too thick to roll up like my make-shift bed roll but it will stand up in an area out of the way. I'll take that trade-off of a better sleep vs a bit more room any day.For those who want a softer feel, get a mattress topper for $20-$35. A topper of 1" - 3" will provide the softness and "give" that many like. It can then be removed for those who like a firm to very firm feel like I do. In any case, I was just going to lay on it for a while to read and check comfort level but ended up falling asleep before I had even put the sheets on. Got a great nap. Hadn't slept that well in months. Can't wait to try a full night of testing tonight :-))). Your mileage may vary. Sleep comfort is a very individual thing but for me and my needs, this mattress is a great fit. Hope it works as well for you.