I have a lot of chronic pain and I've always had to try to create a zero gravity kind of environment on my bed in order to lessen the pain when I sleep"”usually with several feather beds, eggshells, memory foam mattress covers, pillows, blankets, towels in there"”whatever makes it even and comfortable until a sleep number bed comes into the picture. I needed a new solution for my bed drama. I got two of these 5" semi-firm. And then tried just laying on those two in bed to lay on top of. Too firm. So what I did was used a big long bread knife and cut one into long strips. Then I put the strips together and duct taped them loosely to give more movement and less hard surface area. Then put that on my bed, added layers on top. Perfect solution. I had been having to recreate/reassemble this craziness every couple nights. Now it lasts for weeks. Huge. I also used part of the other one and cut it in strips (so I had 6 strips each 12"x24") and laid three lengthwise across and underneath the couch cushions that I primarily sit on. then I stacked the other 3 on top of the first three so it was 3 strips w two layers each (12x24) under where my two couch cushions come together that I primarily use. Over the last couple years since I got this couch, as the cushions compressed, I had been shoving several blankets and pillows under in this area of it to try to help the pain in my hip when I laid on my side. It felt like I wasn't even on cushions but was feeling the support bars for the couch. Hurt a ton hence why I'd been shoving padding under that section. This product, cut up in that way, immediately solved the problem on the couch hurting my hip. And now the couch lays evenly vs this huge budge of padding. So love these two solutions I was able to find w this. Total life change in the pain dept. not only that, these are so much more sturdy and HALF the price and thicker than traditional eggshells or even memory foam. We have a few left over strips that I'll find a use for but wanted to share my trick of what I did to solve that semi-firm was still able to be comfortable for someone w a lot of pain by cutting into strips, taping back together to take even a bit more of the firm out. Super easy to cut w that bread knife. My man was trying to use a carpenter's knife and it just caused chunks to come off and go everywhere. Bread knife is ur best bet if it's sharp! Totally love these will buy again in the future. The reviews are what sold me on this product and I now echo them. Great product, arrived fast and has really impacted my life in terms of pain, hassle and even esthetic w not now having this huge bulge on my couch where all the padding was. Don't hesitate this stuff rocks.

It isn't very wide. It did not gas off. I bought it for my twin bed, it is pretty narrow, not as wide as a twin bed. It is nice and quite thick. I am also going to use in for van camping on top of a regular mattress or blow up twin bed. I am a rather small adult woman. For a big adult , I think it might be too small.

Was afraid it would be not firm enough but it was perfect. Prompt delivery too. And a great price half to one quarter of what others wanted. So what more can you want. Replaced the pressure chamber in an air bed that was leaking. Worked out well at one quarter of the replacement price of what the air bed manufacture wanted. No of course you can't adjust the pressure number but I always kept it at maximum pressure so it worked out well. And I never will have to worry about another air leak.

This was too firm for me. I should have ordered the semi firm one

Ever had one of those days/weeks/years"¦where you feel you're pumping money into the abyss? Every purchase is disappointing, whether product or service, it's all just bad, wrong, over- promised, overpriced junk?
That was me - I'd fully moved from cynicism to apathy so, wasn't expecting much from this "˜cushion'.
In fact, I'd forgotten what I'd ordered - when the box arrived (maybe 18"? X 24") I assumed I'd gotten the 3 or 4" foam.
Rolled up, it looked 1-2" - I thought, "I'll just unroll a few inches, see if it expands at all"¦."
Do not try this in a small space.
You can't unroll a "˜tad'.
It does not "˜expand'.
Releasing that plastic caused the whole thing to unravel & instantly POOF to full size. It was awesome.
I'd gotten the 6" FIRM foam.
It was fully 6/24/72.
There was no odor.
Good signs.
Still skeptical, I tossed it on the floor & flopped down onto it. I'm 5'5, like, 170? I BARELY SUNK. I was flabbergasted- legit laid there & giggled.

I can't speak to its specific longevity, but do have quite a bit of experience w/ re-upholstery - this stuff looks/feels like, high end couch cushion quality IE, made to uphold longterm compression.
I'm so pleased w/ this purchase. So much better than any "˜craft store' foam I've used, in all ways (cost/value/quality). The quality/performance has opened possibilities & I'm rethinking my entire project to get more out of it.
What's more, I'm happily surprised to have a bit of brightened attitude & restored confidence as a consumer - flipping finally, integrity for the win - thank you.