The inner liner is 62% fiberglass and makes its way through the outer liner. I did not use a mattress pad and began having breathing problems and burning eyes after 4 months use. One night on a hunch I got out a flashlight and could see shiny particles on my expresso colored sheets. I am looking into this further....how can they allow this in our bedding?

My daughter raved about this mattress, so when I needed a new one due to back problems, I purchased it on sale at Sam's Club. It was a little slow to arrive, but when it got here, we unpacked it the same day. The bed expanded beautifully. It is just the right firmness for me. Right now I have a spinal disk problem with sciatica nerve pain. It's very comfortable and gives me just the right firmness and support. Thank you Zinus and Sam's Club!

we were very happy with this mattress when it first arrived but almost within 6 months we noticed its firmness was gone and started tossing and turning and even rotating the mattress... We even bought a matress topper or two.... or three and returend them because even with those on it did not help. we have struggled thru and its been two years and now we toss and turn so much we have even ripped some sheets. For the price I guess a year of semi ok-ness is justifiable but from the reviews I guess I expected more. Spend more to get a mattress that will actually last long enough and keep its form for longer than 6 months. besides that delivery was great and shopping online was a breeze.

I don't know where all the good reviews are coming from this is by far the worst mattress I've ever slept on. Not sure if this is something people are buying for their "spare" bedrooms but this is not a mattress anyone will ever want to sleep on a daily basis. First it doesn't really feel like memory foam as it's hard and takes like 15 minutes to have any kind of flexibility in the material. Returning it was another nightmare to deal with.

We purchased the 10" Green Tea Memory Foam mattress to use on a platform bed in a guest bedroom. Our guest are an average sized adult couple. To our relief, they report that they find the memory foam mattress to be comparably comfortable to their own mattress at home. We purchased both the platform frame and the memory foam mattress online. Both arrived ahead of the delivery date estimate. Both were as promised and in good condition, although the box the mattress arrived in did look a little beat up. But that was inconsequential, since the mattress itself comes compressed into a sturdy plastic wrapper. We were able to allow it several weeks to expand, so that by the time our guests arrived it had returned to its full and uniform shape and appearance. We like it because it is the right scale for our smallish, 12'x12' guest bedroom.

Very nice bed! Very firm, yet top layer is soft. Frame is solid and strong. Took me less than 10 min to put it all together, and most of that was carefully getting the mattress out of the bag....lol. The one weird thing was shipping tracking. It took 2 weeks from order date to arrive, and it kept showing the frame was shipped and not the mattress. To my delight and surprise both arrived at the same time.

Bought this for my nine year old son. He’s really tall for his age, and the twin bed he had just wasn’t cutting it anymore. It was delivered fast, set up easily, and is incredibly comfortable! It expanded to full size in under an hour (still didn’t let him near it until the next night to be on the safe side). I spent nearly $3000 for my mattress and it isn’t nearly as comfortable as this one.

It was time to buy a new mattress. I was looking for 2 things: good quality at a good price. I found both it with this mattress. I no longer wake up with back pain. My wife loves it. I highly recommend it if you suffer from back pain. The perfect combination between soft and firm.

We let the mattress expand for 2 days, then put it in our bedroom. It hadn’t expanded fully, but we wanted to try it out. It’s the most comfortable bed I’ve ever slept on, and it did eventually expand all the way. My back feels so much better than it did with our old Serta mattress that was only 5 years old.

Full hybrid selected after considering many options. Tightly rolled and vacuum wrapped, it sprung open to 11.5" in seconds. Over 48 hrs, expanded to 12.5" and off-gassing was complete. Not a good choice for an edge sleeper as there is no support there. Sit elsewhere to put on your socks! Sleep comfort is good in mid-mattress.