Amazon Basics Cooling Gel-Infused Memory Foam Mattress Topper, CertiPUR-US Certified, 3 Inches, California King

This topper will raise your mattress surface about 4”. But don’t worry, your fitted sheet should still fit.The topper is very porous, thus allowing air circulation. I am delighted how well this design works. I’m hot natured and miserable on a “body-heated” mattress. Thanks to the porous topper I’m repositioning less and sleep more soundly. I sure am glad I won’t need to return it because I don’t think it’s possible to put back in the box!

With the addition of this topper, what appeared to be a slightly uncomfortable mattress, transformed into pillowy heaven! It's true that there's a bit of an odor when you first unpack it, but that was gone in a couple of days, so be ready for that. I would buy another one of these! So comfortable!

Not gonna lie, I 100% thought this was gonna tear and have bits falling out immediately but pleasantly surprised with it. It’s soft but firm enough to do the job. Only issue was the smell right out of the box but I let it sit for about 2 hours before putting the sheets on and it aired out well. Good product.

Instant joint relief..! I'm surprised as to how much this great priced item, has provided comfort, and relieved the full body joint pain I have. Priced so well, I was skeptical and it seemed that it would be too soft...!? NOT the case, as my whole body felt instant relief as it removed the pressure on my entire body. No smell, no extra heat, and a huge bang for your buck..!!

I sleep well now!

Weird chemical smell for about a week but airs out after a while. Very comfortable, my back and shoulder pain has been relieved.

It came with instructions on how to install it and it would take 72 hours so far it is been 48 hours. This is super comfortable I used to own a memory foam mattress and they’re amazing and having to downgrade to a regular mattress has been a lot of adjustments I would sleep less and be more in pain, but I also struggle to fall asleep. On my first night, I slept like a baby with no pain nothing so relaxed, and the cooling it’s better since it's summer, the Best investment, and the price is right if you’re staying on a budget.

After moving my sleep number it just hasn’t been the best sleep. We had put a cooling topper on our RV bed and we get the sleep so we decided to put a thinner topper on the sleep number. It works great.

Amazon Basics Cooling Gel-Infused Memory Foam Mattress Topper, 3", 'Medium-Feel Memory Foam'.Aaand...UPDATE #3: An older family member with leg/back problems tried this topper with his med-firm foam mattress. The pain that kept him awake when lying in bed was relieved immediately, for full nights of sleep now. Different strokes for different folks!UPDATE #2: OK, the winds have changed ... this topper has become a fairly useful addition with a med-firm foam mattress. Legs and arms appreciate the additional softness. The topper was not useful previously with a hybrid( pocket-coil and foam), and an inner-springs mattress. This novel can now conclude!UPDATE #1: No real change from original opinion.- When tried on a regular firm spring mattress the result was pretty much the same firm feel, as the topper compressed under both the body-weights tried (150-185lb). No significant softening effect. When the load was concentrated by sitting up in bed the topper really had no effect at all.- On a hybrid foam and pocket-springs mattress, which had a depression after a few years' use, it seemed to improve the feel slightly, if not the actual depression.- Minor offf-gassing odour after a few days, none after a week.THOUGHTS: I wonder if a better bet might be the type of topper that has the firmer foam base-layer under the softer foam top layer? Or not... Overall, I suspect that if you need a new mattress, you need a new mattress.ORIGINAL REVIEW:PROS: As the size in the regular listing was out of stock, I bought this through Amazon warehouse deals at a nice discount. It arrived opened from the original packing, as was stated at purchase, but it was well rolled in two layers of protection and in a suitable box for transit. It was clean and unmarked. The size is correct for the mattress. Odour is present, but it is not as remarkably pungent as some reviewers have noted. There is a recommended 72hrs airing to dissipate.CONS: The product is unexpectedly soft. Very, very soft. Perhaps I am not sufficiently familiar with these toppers, but I expected more density in the material from the item description for what is, essentially, a soft layer of foam which compresses readily to nothing. (I'm happy to ignore the advertised 'cooling' aspect of any of these products - I don't believe in the Tooth Fairy, either...)In fairness, I will let it air out for a few days, try it on a bed, and update this review. I really want this to work.Two stars - for the discount and the meticulous warehouse presentation. Hoping to be able to update for more...

Bought this to put on top of our mattress we use in our camper. It feels great and is a welcome addition!

This has been a game changer for the back issues I was experiencing after getting a firm mattress.I got this during the prime sale, with the hit or miss reviews however I would definitely recommend this mattress topper.The price is so good considering how good this topper is!

Good quality

An excellent piece of memory foam, a joy to lay on.