Memory Foam Mattress in a Box for Cool Sleep & Pressure Relief Medium Firm Mattresses CertiPUR-US Certified Pressure Relieving (8 in, King)

I replaced my mattress to assist with my fibromyalgia and progressing RA issues.This mattress is worth MORE than it costs. My sleep slept amazing!!! It's a solid firm yet pliable, soft, and cool. I did not wake up sweating for the first time in forever!!!Some helpful hints...the mattress likes a warm environment to expand to it's full size. Leaving the mattress for about 2 days REMOVED from the mattress cover will allow it to reach full inch expansion even in the corners. I purchased 3 and every one successfully expanded. Baking soda takes theoff-gassing odor away completely. I allowed the mattress to off-gas naturally for about 36 hours and about an hour before I placed it on my frame, I rubbed a light sprinkling of baking soda over both the top and the bottom. I slept with ZERO off-gassing odor. The odor is real but not bad and not forever. However, if you suffer with allergies, asthma, migraines, etc., take care to ventilate and perhaps mask yourself during this process when in the space with the mattress. After reading the reviews, I've determined that this type of purchase is for the patient!!! If you can exercise patience you will be beyond satisfied vs. tolerant about this STEAL of a buy.Happy Napping!!!

Bought for my son, full size mattress is good, the 12 in height is also great. Upon opening, I gave it about a good 1-2 hours for it to open up and reach its maximum size before placing the bedding stuff. No smells. Delivery was on time and great. My son says he sleeps great in it, I also took a nap in it to try it out and its quite comfy. Takes some getting used to with being a foam mattress but the medium firmness is good.

I deeply recommend this mattress. It is super comfortable, totally inexpensive, and great quality!!!!!!!! I am super happy! I bought the 8 inches one and it is wonderful! Mine inflated in a few hours and I have had no issues so far after about a month of FANTASTIC sleep!

When it first arrived it was about 2.5 inches high and was slanted to one side.After 6 hours the mattress started to take shape and is now up to 7 inches.I am not sure this will expand to 8 inches and I will update this after giving it two more days.One downside is that the corners do not expand totally as in the picture.Other than that it seems like a very good mattress. It’s firm and I weigh 160lbs.I do not sink at all and is supportive.I got an 8 inch for a good price but if I were to purchase it again, I am curious about the 12 inch since its only $20 difference from the 8 inch and I believe it would provide very much support.The 8 inch is totally fine though too.Additionally there is a weird smell that is still lasting after 8 hours but as the other reviews say I am waiting for it to go away in a couple more days.Very satisfied with this purchase.Update.It has been 30 hours since I've opened the mattress.Most of the parts have expanded up to around 7 and 1/2 inches, which seems enough. However, the sides are only 6 inches. The sides doesn't seem to expand that well. Overall, the mattress is very good and satisfactory. The firmness is strong but due to the 2 inch foam topper inside, it is soft. I have a 3 inch topper and when I put this on top it is extremely comfortable to lay down.I am waiting one more day for it to fully expand and then I will start sleeping on it and update it again.Regarding the smell, there is a weird smell to it still. The instructions say that the smell will go away in 72 hours, so I am giving it two more days to see what happens. I will update again.

I was kinda surprised because this mattress is everything the ad said it was. I'm very impressed! It's so thick and sturdy, but the memory foam is perfect, it's a really good deep sleep you get on it. Never tried a bed in a box and I was a bit nervous about how is this going to be good, but it's no worries! Some reviews have said they had a funny smell at first, but mine didn't. I bought 2, one for me and one for my grandson, and neither one smelled. Also it was easy to set up, just open it up and let it stretch out, no curled up edges or lumpiness. Very happy, thank you

Mine puffed up most of the way in the first hour. I unzipped the main cover and then unstuck the fabric from the foam and it expanded the rest of the way.It’s incredibly comfortable. I wanted something more firm than my last mattress. Which was a pillow top that I spent $600+ on. This mattress is the perfect combination of firm and soft. The top layer is so plush but that dense firm second layer really does support you. I’ve been sleeping like a baby ever since I got this! There is a little bit of a smell when it’s first puffing up but it goes away relatively quickly. I would absolutely recommend this mattress to anyone!

I got the queen 6inch ..it had very little smell and seems to be slightly bigger than my queen mattress. It has little grippers on bottom of cover to help hold on whatever surface . I tried to lay on top of the 4"foam topper I already had but because this one is bigger by about 1.5" all around this would slip . I only allowed mine to deflate for about 4 hours it was at 4.5 inch by than . I will say it's way firmer than any foam topper I've ever used . It's comfy but not sink in can barely roll over comfy if that makes sense.