This is an updated review, made on March 29, 2011, or about four months after the original review. It's been updated and rewritten since then, as my opinion of the topper has downgraded some. I'm reevaluating my review from March 20th, as a local bedding salesperson who knows me has provided me with information that I didn't previously know.

Counting this topper, I've owned 7 memory foam toppers (topper pads) in the last six years. Three of them were unusable and had to be sold/returned. The others varied in quality. During this time, I've learned a good bit about memory foam.

The tutorial on buying memory foam has been moved to the end of the review.

After some research, I ordered the listed topper (Sleep Studio 3-Inch ViscO2 Green Tea Memory Foam topper). I did so based on the many reviews that said that there was no, or very little, odor, which is a key issue with me.

The topper arrived packed tightly in a carton, as all do. After... Read more

I am in love with the memory foam matress topper that I order, I have a sleep number bed and still was unalbe to sleep very well so I ordered this matress topper and put it in the cover of the bed, wonderfulllllllllll. I have fibromyalga so find it very hard to sleep all night, this matress realy helps, so comfortable. It was worth every penny and more. Can not say enough good things about it. On a scale of 1 to 10 I give it a 20. Ha.

SIZE DISAPPOINTMENT:
A twin XL is a 39" X 80" mattress. I knew that going in but ultimately I'm disappointed that this mattress is actually only 77 3/4" X 36 3/4". They say Twin XL on the header but tell you further down it is only 37" X 78". This is 9% less mattress than a true twin xl.

So when this is on top of your mattress it is inset 1" all the way around. I would rather have paid a few dollars more and have it meet my standard twin XL size mattress.

MATTRESS TOPPER HAPINESS:
My density of foam at 13 pounds for the mattress worked out to be 2.82 pounds per cubic feet, close enough to their advertised rate.

It took shape the first day out of the package. I have been told I have the nose of a bloodhound and have to say that there is no chemical smell to it at all and the green tea smell is very very minor and pleasant, even more minor now that it's been a month. I don't know if the air holes really make a difference but it seems they... Read more