Bought for a very firm memory foam bed that we have on our RV. Unwrapped and placed on the bed, put the cover on and tested it out. I fell asleep right away and did not want to get up. Love the zip cover. Serta 4 inch with pillow top. Really want one for the bed at home now.

This is one of the best purchases I have made in a long time. I bought a new mattress (firm) and it was so very uncomfortable. Ordered this mattress topper and am so happy with it. It really is like sleeping on a cloud now. Every night is a very restful night with this mattress topper. I would highly recommend it.

I just moved into a dorm room I was doing a lot of research looking for a good quality and reasonably priced mattress topper. I love this one! only downside is it doesnt have a cooling effect, it gets kind of hot which is why I knocked off one star,. other than that its really comfortable,high quality, and it actually expanded to 4 inches

Bought mine 2 days ago, fully expanded within minutes of taking out of the box, and was ready to be used as soon as we put the cover on it. My wife is a restless sleeper, first time in 22 years I watched her sleep in one position almost through the whole night (got caught up binge-watching the Mentalist :-). If course, she had to ruin it by putting an extra sheet on the cover, which made it counterproductive, but even with it she woke up actually relaxed. The best thing is - after the initial "You spend money on things that don't work as advertised" speech, she hasn't said it again yet, which is impressive with our household standards, haha. Money well spent!

This king size pillow top cover with memory foam mattress topper was purchased in August for a new king bed in travel trailer. The topper was packaged compressed and surprisingly the memory foam expanded perfectly. Not all compressed toppers do that. I trimmed the foam with razor blade box cutter to fit the actual mattress as it was 3” too wide. The cover fit just fine. I have a very bad back and two surgeries later lots of arthritis so sleeping comfortably is not easy. I had an occasion to sleep on the bed when my 2 GSDs pushed me out of my home bed! I got up and took my pillows to the travel trailer. Let me tell you right now......I fell onto that bed and it felt absolutely like a cloud. I was supported and the new London Fog sheets were extremely soft to the skin. The comforter, also new, was warm and there was no repugnant odor. The travel trailer already had that new smell anyway. In my honest opinion, this is the very best buy I have made in a very long time. Do not scrimp $$$ on your sleep foundation, sleepless nights and back pain are a terrible price to pay. I love this topper and cover!!

I bought a king size about a month again and it is so soft I hate it, I sink way down and it is very uncomfortable. If you need a soft topper it’s great but I need something firmer. I have purchased toppers before from Sams club that were former but this one is too soft, I will be returning to Sams clib

I LOVE this mattress pad. It is so comfortable and I sleep so well and don't wake up sore every morning. I have it on the least expensive sleep number bed and the combo of the two is wonderful. I bought another for our guest bedroom because I like it so much. However the first mattress had a terrible odor that still hasn't completely gone away more than a month later. The 2nd mattress I ordered had no odor at all. I actually ordered a replacement for the first one because it smelled so bad and just received it yesterday. It has very little odor and I'm sure will dissipate quickly. My advice is to buy this pad! But, if you get one with an odor, order another.

I was skeptical about this topper at first and the price deterred me from buying it but I needed a mattress topper and have tried (and returned) others and I was desperate for comfort. Very pleasantly surprised with the comfort level! Only time will tell though if it is worth the price. It certainly is an investment. At this point, I do recommend it.

I bought this Sams.com and like another reviewer, the product I received is not a Serta. I have a Serta twin and the one I received in CalKing is not the same, beside the tag says something other than Serta! Unfortunately I took the wrapper off the foam part, but I don't care, it'll be a pain in the butt to return to store 40 miles away, but it will get tied down with bungee cords and back to the store it goes!

A couple years ago I ordered a mattress set from Sam's Club. I didn't go with a pillowtop (which I've always had) and I just hate it....too hard. Fine for hubby but my hips just didn't seem to like it at all. Had a hard time sleeping and always woke up with aches....anyhow, decided to get this and see if it helped. (tried a 2" foam topper previously which did nothing to help).... but this, THIS is amazing.....I am so happy that I got it! Hubby doesn't seem to mind it at all and I'm finally getting a good nights sleep. I wake up with no hip pain. It does what it claims and I would recommend this topper to anyone who thinks their bed is too firm and wants a comfy night of sleep. Good job Serta! "zzzzzzzzzzzzzzzzzzzzzz"