Bests & Worsts Reviews from Amazon

I'm a very cautious buyer - I spent around 2 weeks researching brands and different mattress toppers as I was on a college student's budget. This is what I found: Densities of Toppers 2 lb/ft density - For side sleepers, you'd want firmer toppers so lower densities are better 3-4 lb/ft density - For back sleepers, you'd want softer toppers so you can sink. If you want a softer sleep, a 3 pound density is fine. If you want a fitful slumber of mutant marshmallows enveloping you, go for the 4 pound. Thickness of Toppers 2" - It all depends on weight. If you're a tiny Asian woman or one of those tall and really skinny guys who weigh like 130-ish pounds, 2 inches is fine. 3" - If you're like a college student who weighs around 160-ish, this is for you. 4" - For people who are muscular or particularly enjoy cake. Brand Comparisons: Amazon won't let people post links but there's a site called SleepLikeTheDead that shows really good brand comparisons. Do a bit of Googling and you'll find it. Miscellaneous Information Even though the topper seems to be like an inch short of the mattress you're putting it on, it really doesn't make a difference. I thought it would look obvious that the topper was shorter than the mattress but it wasn't. Also, you have to let it expand before you use it or else it won't be able to expand to its maximum size. Some do weeks, others do a couple of days, but I let mine expand for like 5 hours and I measured it with a ruler and it got to its 3" thickness so I decided it was ready. The last site shows great reviews of the topper. I'm a a back sleeper so I had to get a moderately thick topper and I happen to prefer my sleeps to be analogous to being devoured by pillows so I got a 4 pound density. This specific topper is the HIGHEST rated 3", 4lb/ft density mattress so this seemed like a perfect fit. I was still a bit nervous on my choice as $150 is a big amount for a student but my first night on it removed all doubts. It's been several weeks now and I've noticed no smell except for the stench of my own laziness as I refuse to get up for classes. It is great. You will feel like you're floating on a pool, except instead of water, there's memory foam. I highly recommend it if you're a back sleeper of moderate weight. EDIT: Seeing that there are people who still comment on this, I figure it's time to give an update. It's December 2015 and this topper has outlasted not only two girlfriend but also the usefulness of my college degree. Most passerby's in my room comment of how soft and luxurious my mattress is. Joke's on the them though because my mattress is $100 from Ikea. Kinda like baking a really crappy cake but having really good frosting. The only thing that you should know is that it traps body heat more than a normal mattress. This means during the summer, I could get by without a blanket because it'd get too hot for me. My girlfriend thinks of this as a positive and loves it in all seasons. I moved to a new apartment in July and just folded the topper in half. Don't do this because now it has a tear half a foot long on each side. The instructions do say to roll instead of fold so this is purely my fault. Otherwise, this topper has more job security than I do.